Merge pull request #126 from bandprotocol/nathachai/change-request-search-proto

Change calldata of QueryRequestSearchRequest to use hex format instead

Author: ntchjb

proto/oracle/v1/query.proto

@@ -228,8 +228,9 @@ message QueryActiveValidatorsResponse {
 message QueryRequestSearchRequest {
   // OracleScriptID is ID of an oracle script
   int64 oracle_script_id = 1;
-  // Calldata is OBI-encoded data as argument params for the oracle script
-  bytes calldata = 2;
+  // Calldata is OBI-encoded data in hex format as argument params for the
+  // oracle script
+  string calldata = 2;
   // AskCount is number of validators allowed for fulfilling the request
   uint64 ask_count = 3;
   // MinCount is number of validators required for fulfilling the request