diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a06599..750d122 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## [1.1.7] - 29.Jun.2021.
+- update support for horizon > 2.5.1 (representation of "..._muxed_id" field values changed to string)
+
 ## [1.1.6] - 06.Jun.2021.
 - extend asset response for horizon 2.2.0
 - add new endpont to fetch operations for claimable balances
diff --git a/README.md b/README.md
index e28dca8..0ccd22d 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ The Soneso open source Stellar SDK for Flutter is build with Dart and provides A
 1. Add the dependency to your pubspec.yaml file:
 ```
 dependencies:
-  stellar_flutter_sdk: ^1.1.6
+  stellar_flutter_sdk: ^1.1.7
 ```
 2. Install it (command line or IDE):
 ```
diff --git a/documentation/sdk_api_doc.zip b/documentation/sdk_api_doc.zip
index a8ff0d9..92111df 100644
Binary files a/documentation/sdk_api_doc.zip and b/documentation/sdk_api_doc.zip differ
diff --git a/lib/src/responses/effects/account_effects_responses.dart b/lib/src/responses/effects/account_effects_responses.dart
index da2978e..78461e0 100644
--- a/lib/src/responses/effects/account_effects_responses.dart
+++ b/lib/src/responses/effects/account_effects_responses.dart
@@ -22,7 +22,7 @@ class AccountCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -45,7 +45,7 @@ class AccountRemovedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -83,10 +83,10 @@ class AccountCreditedEffectResponse extends EffectResponse {
         ..id = json['id'] as String
         ..account = json['account'] == null ? null : json['account']
         ..accountMuxed =
-        json['account_muxed'] == null ? null : json['account_muxed']
+            json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -124,10 +124,10 @@ class AccountDebitedEffectResponse extends EffectResponse {
         ..id = json['id'] as String
         ..account = json['account'] == null ? null : json['account']
         ..accountMuxed =
-        json['account_muxed'] == null ? null : json['account_muxed']
+            json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -156,10 +156,10 @@ class AccountThresholdsUpdatedEffectResponse extends EffectResponse {
         ..id = json['id'] as String
         ..account = json['account'] == null ? null : json['account']
         ..accountMuxed =
-        json['account_muxed'] == null ? null : json['account_muxed']
+            json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -182,10 +182,10 @@ class AccountHomeDomainUpdatedEffectResponse extends EffectResponse {
         ..id = json['id'] as String
         ..account = json['account'] == null ? null : json['account']
         ..accountMuxed =
-        json['account_muxed'] == null ? null : json['account_muxed']
+            json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -214,10 +214,10 @@ class AccountFlagsUpdatedEffectResponse extends EffectResponse {
         ..id = json['id'] as String
         ..account = json['account'] == null ? null : json['account']
         ..accountMuxed =
-        json['account_muxed'] == null ? null : json['account_muxed']
+            json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -238,10 +238,10 @@ class AccountInflationDestinationUpdatedEffectResponse extends EffectResponse {
         ..id = json['id'] as String
         ..account = json['account'] == null ? null : json['account']
         ..accountMuxed =
-        json['account_muxed'] == null ? null : json['account_muxed']
+            json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
diff --git a/lib/src/responses/effects/claimable_balances_effects.dart b/lib/src/responses/effects/claimable_balances_effects.dart
index e2ef590..5e761ba 100644
--- a/lib/src/responses/effects/claimable_balances_effects.dart
+++ b/lib/src/responses/effects/claimable_balances_effects.dart
@@ -30,7 +30,7 @@ class ClaimableBalanceCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -65,7 +65,7 @@ class ClaimableBalanceClaimantCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -97,7 +97,7 @@ class ClaimableBalanceClaimedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -121,7 +121,7 @@ class ClaimableBalanceClawedBackEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
diff --git a/lib/src/responses/effects/data_effects_responses.dart b/lib/src/responses/effects/data_effects_responses.dart
index 5f04f54..5499a9b 100644
--- a/lib/src/responses/effects/data_effects_responses.dart
+++ b/lib/src/responses/effects/data_effects_responses.dart
@@ -22,7 +22,7 @@ class DataCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -49,7 +49,7 @@ class DataUpdatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -74,7 +74,7 @@ class DataRemovedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
diff --git a/lib/src/responses/effects/effect_responses.dart b/lib/src/responses/effects/effect_responses.dart
index ae8fb2f..9c2747f 100644
--- a/lib/src/responses/effects/effect_responses.dart
+++ b/lib/src/responses/effects/effect_responses.dart
@@ -18,7 +18,7 @@ abstract class EffectResponse extends Response {
   String id;
   String account;
   String accountMuxed;
-  int accountMuxedId;
+  String accountMuxedId;
   String type;
   String createdAt;
   String pagingToken;
diff --git a/lib/src/responses/effects/misc_effects_responses.dart b/lib/src/responses/effects/misc_effects_responses.dart
index 26d7132..35c3195 100644
--- a/lib/src/responses/effects/misc_effects_responses.dart
+++ b/lib/src/responses/effects/misc_effects_responses.dart
@@ -20,7 +20,7 @@ class SequenceBumpedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -70,7 +70,7 @@ class TrustLineFlagsUpdatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
diff --git a/lib/src/responses/effects/signer_effects_responses.dart b/lib/src/responses/effects/signer_effects_responses.dart
index 4ecab84..08501c5 100644
--- a/lib/src/responses/effects/signer_effects_responses.dart
+++ b/lib/src/responses/effects/signer_effects_responses.dart
@@ -29,7 +29,7 @@ class SignerCreatedEffectResponse extends SignerEffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -54,7 +54,7 @@ class SignerRemovedEffectResponse extends SignerEffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -79,7 +79,7 @@ class SignerUpdatedEffectResponse extends SignerEffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
diff --git a/lib/src/responses/effects/sponsorship_effects_responses.dart b/lib/src/responses/effects/sponsorship_effects_responses.dart
index 7f16046..7517ab3 100644
--- a/lib/src/responses/effects/sponsorship_effects_responses.dart
+++ b/lib/src/responses/effects/sponsorship_effects_responses.dart
@@ -20,7 +20,7 @@ class AccountSponsorshipCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -48,7 +48,7 @@ class AccountSponsorshipUpdatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -73,7 +73,7 @@ class AccountSponsorshipRemovedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -97,7 +97,7 @@ class TrustlineSponsorshipCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -126,7 +126,7 @@ class TrustlineSponsorshipUpdatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -151,7 +151,7 @@ class TrustlineSponsorshipRemovedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -177,7 +177,7 @@ class DataSponsorshipCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -208,7 +208,7 @@ class DataSponsorshipUpdatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -234,7 +234,7 @@ class DataSponsorshipRemovedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -259,7 +259,7 @@ class ClaimableBalanceSponsorshipCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -288,7 +288,7 @@ class ClaimableBalanceSponsorshipUpdatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -313,7 +313,7 @@ class ClaimableBalanceSponsorshipRemovedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -339,7 +339,7 @@ class SignerSponsorshipCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -370,7 +370,7 @@ class SignerSponsorshipUpdatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -396,7 +396,7 @@ class SignerSponsorshipRemovedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
diff --git a/lib/src/responses/effects/trade_effects_responses.dart b/lib/src/responses/effects/trade_effects_responses.dart
index abe12f2..768af80 100644
--- a/lib/src/responses/effects/trade_effects_responses.dart
+++ b/lib/src/responses/effects/trade_effects_responses.dart
@@ -20,7 +20,7 @@ class OfferCreatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -43,7 +43,7 @@ class OfferRemovedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -66,7 +66,7 @@ class OfferUpdatedEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -81,7 +81,7 @@ class OfferUpdatedEffectResponse extends EffectResponse {
 class TradeEffectResponse extends EffectResponse {
   String seller;
   String sellerMuxed;
-  int sellerMuxedId;
+  String sellerMuxedId;
   String offerId;
 
   String soldAmount;
@@ -130,7 +130,7 @@ class TradeEffectResponse extends EffectResponse {
           json['seller_muxed'] == null ? null : json['seller_muxed'],
           json['seller_muxed_id'] == null
               ? null
-              : convertInt(json['seller_muxed_id']),
+              : json['seller_muxed_id'] as String,
           json['offer_id'] as String,
           json['sold_amount'] as String,
           json['sold_asset_type'] as String,
@@ -146,7 +146,7 @@ class TradeEffectResponse extends EffectResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
diff --git a/lib/src/responses/effects/trustline_effects_responses.dart b/lib/src/responses/effects/trustline_effects_responses.dart
index deb5c27..0fd9ec7 100644
--- a/lib/src/responses/effects/trustline_effects_responses.dart
+++ b/lib/src/responses/effects/trustline_effects_responses.dart
@@ -36,7 +36,7 @@ class TrustlineAuthorizedEffectResponse extends TrustlineAuthorizationResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -66,7 +66,7 @@ class TrustlineAuthorizedToMaintainLiabilitiesEffectResponse
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -96,7 +96,7 @@ class TrustlineDeauthorizedEffectResponse
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -145,7 +145,7 @@ class TrustlineCreatedEffectResponse extends TrustlineCUDResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -174,7 +174,7 @@ class TrustlineRemovedEffectResponse extends TrustlineCUDResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
@@ -203,7 +203,7 @@ class TrustlineUpdatedEffectResponse extends TrustlineCUDResponse {
             json['account_muxed'] == null ? null : json['account_muxed']
         ..accountMuxedId = json['account_muxed_id'] == null
             ? null
-            : convertInt(json['account_muxed_id'])
+            : json['account_muxed_id'] as String
         ..type = json['type'] as String
         ..createdAt = json['created_at'] as String
         ..pagingToken = json['paging_token'] as String
diff --git a/lib/src/responses/operations/account_merge_operation_response.dart b/lib/src/responses/operations/account_merge_operation_response.dart
index cdeff22..790ffab 100644
--- a/lib/src/responses/operations/account_merge_operation_response.dart
+++ b/lib/src/responses/operations/account_merge_operation_response.dart
@@ -6,10 +6,10 @@ import 'operation_responses.dart';
 class AccountMergeOperationResponse extends OperationResponse {
   String account;
   String accountMuxed;
-  int accountMuxedId;
+  String accountMuxedId;
   String into;
   String intoMuxed;
-  int intoMuxedId;
+  String intoMuxedId;
 
   AccountMergeOperationResponse(this.account, this.accountMuxed,
       this.accountMuxedId, this.into, this.intoMuxed, this.intoMuxedId);
@@ -20,12 +20,12 @@ class AccountMergeOperationResponse extends OperationResponse {
           json['account_muxed'] == null ? null : json['account_muxed'],
           json['account_muxed_id'] == null
               ? null
-              : convertInt(json['account_muxed_id']),
+              : json['account_muxed_id'] as String,
           json['into'] == null ? null : json['into'],
           json['into_muxed'] == null ? null : json['into_muxed'],
           json['into_muxed_id'] == null
               ? null
-              : convertInt(json['into_muxed_id']))
+              : json['into_muxed_id'] as String)
         ..id = int.parse(json['id'] as String)
         ..sourceAccount =
             json['source_account'] == null ? null : json['source_account']
@@ -34,7 +34,7 @@ class AccountMergeOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/allow_trust_operation_response.dart b/lib/src/responses/operations/allow_trust_operation_response.dart
index 70b1c41..a40d546 100644
--- a/lib/src/responses/operations/allow_trust_operation_response.dart
+++ b/lib/src/responses/operations/allow_trust_operation_response.dart
@@ -9,7 +9,7 @@ class AllowTrustOperationResponse extends OperationResponse {
   String trustor;
   String trustee;
   String trusteeMuxed;
-  int trusteeMuxedId;
+  String trusteeMuxedId;
   String assetType;
   String assetCode;
   String assetIssuer;
@@ -46,7 +46,7 @@ class AllowTrustOperationResponse extends OperationResponse {
           json['trustee_muxed'] == null ? null : json['trustee_muxed'],
           json['trustee_muxed_id'] == null
               ? null
-              : convertInt(json['trustee_muxed_id']),
+              : json['trustee_muxed_id'] as String,
           json['trustor'] == null ? null : json['trustor'])
         ..id = int.parse(json['id'] as String)
         ..sourceAccount =
@@ -56,7 +56,7 @@ class AllowTrustOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/bump_sequence_operation_response.dart b/lib/src/responses/operations/bump_sequence_operation_response.dart
index 02c0c11..4c1e3a0 100644
--- a/lib/src/responses/operations/bump_sequence_operation_response.dart
+++ b/lib/src/responses/operations/bump_sequence_operation_response.dart
@@ -18,7 +18,7 @@ class BumpSequenceOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/change_trust_operation_response.dart b/lib/src/responses/operations/change_trust_operation_response.dart
index 7f6a33d..f079be7 100644
--- a/lib/src/responses/operations/change_trust_operation_response.dart
+++ b/lib/src/responses/operations/change_trust_operation_response.dart
@@ -8,7 +8,7 @@ import '../response.dart';
 class ChangeTrustOperationResponse extends OperationResponse {
   String trustor;
   String trustorMuxed;
-  int trustorMuxedId;
+  String trustorMuxedId;
   String trustee;
   String assetType;
   String assetCode;
@@ -39,7 +39,7 @@ class ChangeTrustOperationResponse extends OperationResponse {
           json['trustor_muxed'] == null ? null : json['trustor_muxed'],
           json['trustor_muxed_id'] == null
               ? null
-              : convertInt(json['trustor_muxed_id']),
+              : json['trustor_muxed_id'] as String,
           json['trustee'] == null ? null : json['trustee'],
           json['asset_type'] as String,
           json['asset_code'] as String,
@@ -53,7 +53,7 @@ class ChangeTrustOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/claimable_balances_operations_responses.dart b/lib/src/responses/operations/claimable_balances_operations_responses.dart
index 8f963c6..ae43338 100644
--- a/lib/src/responses/operations/claimable_balances_operations_responses.dart
+++ b/lib/src/responses/operations/claimable_balances_operations_responses.dart
@@ -35,7 +35,7 @@ class CreateClaimableBalanceOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
@@ -53,7 +53,7 @@ class ClaimClaimableBalanceOperationResponse extends OperationResponse {
   String balanceId;
   String claimantAccountId;
   String claimantMuxed;
-  int claimantMuxedId;
+  String claimantMuxedId;
 
   ClaimClaimableBalanceOperationResponse(this.balanceId, this.claimantAccountId,
       this.claimantMuxed, this.claimantMuxedId);
@@ -66,7 +66,7 @@ class ClaimClaimableBalanceOperationResponse extends OperationResponse {
           json['claimant_muxed'] == null ? null : json['claimant_muxed'],
           json['claimant_muxed_id'] == null
               ? null
-              : convertInt(json['claimant_muxed_id']))
+              : json['claimant_muxed_id'] as String)
         ..id = int.parse(json['id'] as String)
         ..sourceAccount =
             json['source_account'] == null ? null : json['source_account']
@@ -75,7 +75,7 @@ class ClaimClaimableBalanceOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/clawback_operations_responses.dart b/lib/src/responses/operations/clawback_operations_responses.dart
index 85fff6d..e5e73c3 100644
--- a/lib/src/responses/operations/clawback_operations_responses.dart
+++ b/lib/src/responses/operations/clawback_operations_responses.dart
@@ -6,7 +6,7 @@ class ClawbackOperationResponse extends OperationResponse {
   String amount;
   String from;
   String fromMuxed;
-  int fromMuxedId;
+  String fromMuxedId;
   String assetType;
   String assetCode;
   String assetIssuer;
@@ -21,7 +21,7 @@ class ClawbackOperationResponse extends OperationResponse {
           json['from_muxed'] == null ? null : json['from_muxed'],
           json['from_muxed_id'] == null
               ? null
-              : convertInt(json['from_muxed_id']),
+              : json['from_muxed_id'] as String,
           json['asset_type'] as String,
           json['asset_code'] as String,
           json['asset_issuer'] as String)
@@ -33,7 +33,7 @@ class ClawbackOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
@@ -63,7 +63,7 @@ class ClawbackClaimableBalanceOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/create_account_operation_response.dart b/lib/src/responses/operations/create_account_operation_response.dart
index 0b86601..95d470f 100644
--- a/lib/src/responses/operations/create_account_operation_response.dart
+++ b/lib/src/responses/operations/create_account_operation_response.dart
@@ -7,7 +7,7 @@ class CreateAccountOperationResponse extends OperationResponse {
   String account;
   String funder;
   String funderMuxed;
-  int funderMuxedId;
+  String funderMuxedId;
   String startingBalance;
 
   CreateAccountOperationResponse(this.funder, this.funderMuxed,
@@ -19,7 +19,7 @@ class CreateAccountOperationResponse extends OperationResponse {
           json['funder_muxed'] == null ? null : json['funder_muxed'],
           json['funder_muxed_id'] == null
               ? null
-              : convertInt(json['funder_muxed_id']),
+              : json['funder_muxed_id'] as String,
           json['starting_balance'] as String,
           json['account'] == null ? null : json['account'])
         ..id = int.parse(json['id'] as String)
@@ -30,7 +30,7 @@ class CreateAccountOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/create_passive_sell_offer_response.dart b/lib/src/responses/operations/create_passive_sell_offer_response.dart
index 32c0270..a34a6c5 100644
--- a/lib/src/responses/operations/create_passive_sell_offer_response.dart
+++ b/lib/src/responses/operations/create_passive_sell_offer_response.dart
@@ -65,7 +65,7 @@ class CreatePassiveSellOfferOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/inflation_operation_response.dart b/lib/src/responses/operations/inflation_operation_response.dart
index bb7212d..89f27d3 100644
--- a/lib/src/responses/operations/inflation_operation_response.dart
+++ b/lib/src/responses/operations/inflation_operation_response.dart
@@ -16,7 +16,7 @@ class InflationOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/manage_buy_offer_operation_response.dart b/lib/src/responses/operations/manage_buy_offer_operation_response.dart
index 05f75a7..cbca818 100644
--- a/lib/src/responses/operations/manage_buy_offer_operation_response.dart
+++ b/lib/src/responses/operations/manage_buy_offer_operation_response.dart
@@ -64,7 +64,7 @@ class ManageBuyOfferOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/manage_data_operation_response.dart b/lib/src/responses/operations/manage_data_operation_response.dart
index 973d9cd..2854dee 100644
--- a/lib/src/responses/operations/manage_data_operation_response.dart
+++ b/lib/src/responses/operations/manage_data_operation_response.dart
@@ -20,7 +20,7 @@ class ManageDataOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/manage_sell_offer_operation_response.dart b/lib/src/responses/operations/manage_sell_offer_operation_response.dart
index 2afe5bf..4d4bed2 100644
--- a/lib/src/responses/operations/manage_sell_offer_operation_response.dart
+++ b/lib/src/responses/operations/manage_sell_offer_operation_response.dart
@@ -65,7 +65,7 @@ class ManageSellOfferOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/operation_responses.dart b/lib/src/responses/operations/operation_responses.dart
index a99e5e6..88dad34 100644
--- a/lib/src/responses/operations/operation_responses.dart
+++ b/lib/src/responses/operations/operation_responses.dart
@@ -25,7 +25,7 @@ abstract class OperationResponse extends Response {
   int id;
   String sourceAccount;
   String sourceAccountMuxed;
-  int sourceAccountMuxedId;
+  String sourceAccountMuxedId;
   String pagingToken;
   String createdAt;
   String transactionHash;
diff --git a/lib/src/responses/operations/path_payment_strict_receive_operation_response.dart b/lib/src/responses/operations/path_payment_strict_receive_operation_response.dart
index 992a934..aa7a70b 100644
--- a/lib/src/responses/operations/path_payment_strict_receive_operation_response.dart
+++ b/lib/src/responses/operations/path_payment_strict_receive_operation_response.dart
@@ -13,9 +13,9 @@ class PathPaymentStrictReceiveOperationResponse extends OperationResponse {
   String to;
 
   String fromMuxed;
-  int fromMuxedId;
+  String fromMuxedId;
   String toMuxed;
-  int toMuxedId;
+  String toMuxedId;
 
   String assetType;
   String assetCode;
@@ -70,10 +70,10 @@ class PathPaymentStrictReceiveOperationResponse extends OperationResponse {
           json['from_muxed'] == null ? null : json['from_muxed'],
           json['from_muxed_id'] == null
               ? null
-              : convertInt(json['from_muxed_id']),
+              : json['from_muxed_id'] as String,
           json['to'] == null ? null : json['to'],
           json['to_muxed'] == null ? null : json['to_muxed'],
-          json['to_muxed_id'] == null ? null : convertInt(json['to_muxed_id']),
+          json['to_muxed_id'] == null ? null : json['to_muxed_id'] as String,
           json['asset_type'] as String,
           json['asset_code'] as String,
           json['asset_issuer'] as String,
@@ -93,7 +93,7 @@ class PathPaymentStrictReceiveOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/path_payment_strict_send_operation_response.dart b/lib/src/responses/operations/path_payment_strict_send_operation_response.dart
index 1ed599f..82b22b6 100644
--- a/lib/src/responses/operations/path_payment_strict_send_operation_response.dart
+++ b/lib/src/responses/operations/path_payment_strict_send_operation_response.dart
@@ -13,9 +13,9 @@ class PathPaymentStrictSendOperationResponse extends OperationResponse {
   String to;
 
   String fromMuxed;
-  int fromMuxedId;
+  String fromMuxedId;
   String toMuxed;
-  int toMuxedId;
+  String toMuxedId;
 
   String assetType;
   String assetCode;
@@ -70,10 +70,10 @@ class PathPaymentStrictSendOperationResponse extends OperationResponse {
           json['from_muxed'] == null ? null : json['from_muxed'],
           json['from_muxed_id'] == null
               ? null
-              : convertInt(json['from_muxed_id']),
+              : json['from_muxed_id'] as String,
           json['to'] == null ? null : json['to'],
           json['to_muxed'] == null ? null : json['to_muxed'],
-          json['to_muxed_id'] == null ? null : convertInt(json['to_muxed_id']),
+          json['to_muxed_id'] == null ? null : json['to_muxed_id'] as String,
           json['asset_type'] as String,
           json['asset_code'] as String,
           json['asset_issuer'] as String,
@@ -93,7 +93,7 @@ class PathPaymentStrictSendOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/payment_operation_response.dart b/lib/src/responses/operations/payment_operation_response.dart
index 102d881..e4b330c 100644
--- a/lib/src/responses/operations/payment_operation_response.dart
+++ b/lib/src/responses/operations/payment_operation_response.dart
@@ -14,9 +14,9 @@ class PaymentOperationResponse extends OperationResponse {
   KeyPair from;
   KeyPair to;
   String fromMuxed;
-  int fromMuxedId;
+  String fromMuxedId;
   String toMuxed;
-  int toMuxedId;
+  String toMuxedId;
 
   PaymentOperationResponse(
       this.amount,
@@ -38,7 +38,8 @@ class PaymentOperationResponse extends OperationResponse {
     }
   }
 
-  factory PaymentOperationResponse.fromJson(Map<String, dynamic> json) =>
+  factory PaymentOperationResponse.fromJson(
+          Map<String, dynamic> json) =>
       new PaymentOperationResponse(
           json['amount'] as String,
           json['asset_type'] as String,
@@ -50,12 +51,12 @@ class PaymentOperationResponse extends OperationResponse {
           json['from_muxed'] == null ? null : json['from_muxed'],
           json['from_muxed_id'] == null
               ? null
-              : convertInt(json['from_muxed_id']),
+              : json['from_muxed_id'] as String,
           json['to'] == null
               ? null
               : KeyPair.fromAccountId(json['to'] as String),
           json['to_muxed'] == null ? null : json['to_muxed'],
-          json['to_muxed_id'] == null ? null : convertInt(json['to_muxed_id']))
+          json['to_muxed_id'] == null ? null : json['to_muxed_id'] as String)
         ..id = int.parse(json['id'] as String)
         ..sourceAccount =
             json['source_account'] == null ? null : json['source_account']
@@ -64,7 +65,7 @@ class PaymentOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/set_options_operation_response.dart b/lib/src/responses/operations/set_options_operation_response.dart
index 208e1d6..87c8be1 100644
--- a/lib/src/responses/operations/set_options_operation_response.dart
+++ b/lib/src/responses/operations/set_options_operation_response.dart
@@ -53,7 +53,7 @@ class SetOptionsOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/set_trustline_flags_operation_response.dart b/lib/src/responses/operations/set_trustline_flags_operation_response.dart
index 5c65841..6468e13 100644
--- a/lib/src/responses/operations/set_trustline_flags_operation_response.dart
+++ b/lib/src/responses/operations/set_trustline_flags_operation_response.dart
@@ -30,7 +30,7 @@ class SetTrustlineFlagsOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/operations/sponsorship_operations_responses.dart b/lib/src/responses/operations/sponsorship_operations_responses.dart
index fa091fd..71daf38 100644
--- a/lib/src/responses/operations/sponsorship_operations_responses.dart
+++ b/lib/src/responses/operations/sponsorship_operations_responses.dart
@@ -20,7 +20,7 @@ class BeginSponsoringFutureReservesOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
@@ -37,7 +37,7 @@ class BeginSponsoringFutureReservesOperationResponse extends OperationResponse {
 class EndSponsoringFutureReservesOperationResponse extends OperationResponse {
   String beginSponsor;
   String beginSponsorMuxed;
-  int beginSponsorMuxedId;
+  String beginSponsorMuxedId;
 
   EndSponsoringFutureReservesOperationResponse(
       this.beginSponsor, this.beginSponsorMuxed, this.beginSponsorMuxedId);
@@ -53,7 +53,7 @@ class EndSponsoringFutureReservesOperationResponse extends OperationResponse {
               : json['begin_sponsor_muxed'],
           json['begin_sponsor_muxed_id'] == null
               ? null
-              : convertInt(json['begin_sponsor_muxed_id']))
+              : json['begin_sponsor_muxed_id'] as String)
         ..id = int.parse(json['id'] as String)
         ..sourceAccount =
             json['source_account'] == null ? null : json['source_account']
@@ -62,7 +62,7 @@ class EndSponsoringFutureReservesOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
@@ -130,7 +130,7 @@ class RevokeSponsorshipOperationResponse extends OperationResponse {
             : json['source_account_muxed']
         ..sourceAccountMuxedId = json['source_account_muxed_id'] == null
             ? null
-            : convertInt(json['source_account_muxed_id'])
+            : json['source_account_muxed_id'] as String
         ..pagingToken = json['paging_token'] as String
         ..createdAt = json['created_at'] as String
         ..transactionHash = json['transaction_hash'] as String
diff --git a/lib/src/responses/transaction_response.dart b/lib/src/responses/transaction_response.dart
index fee58a8..1b59a38 100644
--- a/lib/src/responses/transaction_response.dart
+++ b/lib/src/responses/transaction_response.dart
@@ -14,10 +14,10 @@ class TransactionResponse extends Response {
   String createdAt;
   String sourceAccount;
   String sourceAccountMuxed;
-  int sourceAccountMuxedId;
+  String sourceAccountMuxedId;
   String feeAccount;
   String feeAccountMuxed;
-  int feeAccountMuxedId;
+  String feeAccountMuxedId;
   bool successful;
   String pagingToken;
   int sourceAccountSequence;
@@ -78,10 +78,10 @@ class TransactionResponse extends Response {
         json['created_at'] as String,
         json['source_account'] as String,
         json['source_account_muxed'] as String,
-        convertInt(json['source_account_muxed_id']),
+        json['source_account_muxed_id'] as String,
         json['fee_account'] as String,
         json['fee_account_muxed'] as String,
-        convertInt(json['fee_account_muxed_id']),
+        json['fee_account_muxed_id'] as String,
         json['successful'] as bool,
         json['paging_token'] as String,
         convertInt(json['source_account_sequence']),
diff --git a/pubspec.yaml b/pubspec.yaml
index 4729c03..a1abb5d 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: stellar_flutter_sdk
 description: A stellar blockchain sdk that query's horizon, build, signs and submits transactions to the stellar network.
-version: 1.1.6
+version: 1.1.7
 homepage: https://github.com/Soneso/stellar_flutter_sdk
 
 environment: