diff --git a/components/schemas/TronAccount.yml b/components/schemas/TronAccount.yml
index 6fd530e..ac0afa2 100644
--- a/components/schemas/TronAccount.yml
+++ b/components/schemas/TronAccount.yml
@@ -36,14 +36,13 @@ properties:
         - value
   trc20:
     type: array
+    description: List of TRC20 asset balances.
     items:
       type: object
-      description:
-        Balance of the TRC20 assets. It is structured as key value array,
-        where key is the address of the TRC20 and value is the balance.
-      example:
-        TRkuKAxmWZ4G74MvZnFpoosQZsfvtNpmwH: "30958"
-        TVKXY8DJ9aVTcg3wwVrRRs2FbTUwi4UZWR: "70000"
+      additionalProperties: 
+        type: string
+        description: Balance of the TRC20 token, where key is the TRC20 token address.
+        example: {"TWEWc9EoVMn588Kn7p1E6pdcpStTg3AhsG": "99999700000000000"}
   createTime:
     type: number
     description: Date of creation of the account in UTC millis.