accounts creation

frontend/pshared/lib/data/dto/wallet/asset.dart

@@ -1,20 +1,21 @@
 import 'package:json_annotation/json_annotation.dart';
 
+import 'package:pshared/data/dto/wallet/chain_asset.dart';
+
 part 'asset.g.dart';
 
 
 @JsonSerializable()
-class WalletAssetDTO {
-  final String chain;
-  final String tokenSymbol;
+class WalletAssetDTO extends ChainAssetDTO {
   final String contractAddress;
 
   const WalletAssetDTO({
-    required this.chain,
-    required this.tokenSymbol,
+    required super.chain,
+    required super.tokenSymbol,
     required this.contractAddress,
   });
 
   factory WalletAssetDTO.fromJson(Map<String, dynamic> json) => _$WalletAssetDTOFromJson(json);
+  @override
   Map<String, dynamic> toJson() => _$WalletAssetDTOToJson(this);
 }

frontend/pshared/lib/data/dto/wallet/chain_asset.dart

@@ -0,0 +1,18 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'chain_asset.g.dart';
+
+
+@JsonSerializable()
+class ChainAssetDTO {
+  final String chain;
+  final String tokenSymbol;
+
+  const ChainAssetDTO({
+    required this.chain,
+    required this.tokenSymbol,
+  });
+
+  factory ChainAssetDTO.fromJson(Map<String, dynamic> json) => _$ChainAssetDTOFromJson(json);
+  Map<String, dynamic> toJson() => _$ChainAssetDTOToJson(this);
+}