+ quotation provider

frontend/pshared/lib/data/dto/payment/external_chain.dart

@@ -0,0 +1,22 @@
+import 'package:json_annotation/json_annotation.dart';
+
+import 'package:pshared/data/dto/payment/asset.dart';
+
+part 'external_chain.g.dart';
+
+
+@JsonSerializable()
+class ExternalChainEndpointDTO {
+  final AssetDTO? asset;
+  final String address;
+  final String? memo;
+
+  const ExternalChainEndpointDTO({
+    this.asset,
+    required this.address,
+    this.memo,
+  });
+
+  factory ExternalChainEndpointDTO.fromJson(Map<String, dynamic> json) => _$ExternalChainEndpointDTOFromJson(json);
+  Map<String, dynamic> toJson() => _$ExternalChainEndpointDTOToJson(this);
+}