TF-48 Create and update object for compose email

model/lib/account/account_request.dart

@@ -0,0 +1,17 @@
+import 'package:equatable/equatable.dart';
+import 'package:model/model.dart';
+
+class AccountRequest with EquatableMixin {
+  final UserName userName;
+  final Password password;
+
+  AccountRequest(this.userName, this.password);
+
+  Map<String, dynamic> toJson() => <String, dynamic>{
+    'username': userName.userName,
+    'password': password.value,
+  };
+
+  @override
+  List<Object> get props => [userName, password];
+}