update

lib/models/auth/auth_model.dart

@@ -0,0 +1,27 @@
+import 'package:chat/models/user_info_model.dart';
+
+class AuthModel {
+  String tokenType;
+  String accessToken;
+  String userSig;
+  String userID;
+  UserInfoModel userInfo;
+
+  String get userToken => '$tokenType $accessToken';
+
+  AuthModel({
+    required this.tokenType,
+    required this.accessToken,
+    required this.userID,
+    required this.userSig,
+    required this.userInfo,
+  });
+
+  factory AuthModel.fromJson(Map<String, dynamic> json) => AuthModel(
+        tokenType: json['token_type'],
+        accessToken: json['access_token'],
+        userID: json['user_id'],
+        userSig: json['user_sig'],
+        userInfo: UserInfoModel.fromJson(json['user_info']),
+      );
+}