diff --git a/lib/models/comment/comment.dart b/lib/models/comment/comment.dart
index 51cdaf7..4a53a4a 100644
--- a/lib/models/comment/comment.dart
+++ b/lib/models/comment/comment.dart
@@ -2,17 +2,17 @@ import 'feedback.dart';
 import 'reply.dart';
 import 'user.dart';
 
-class Comment {
+class CommentData {
   final int id;
   final String text;
   final String createdAt;
   final bool liked;
   final bool disliked;
-  final Feedback feedback;
-  final User user;
+  FeedbackData feedback;
+  final UserOverview user;
   final List<Reply> replies;
 
-  Comment({
+  CommentData({
     required this.id,
     required this.text,
     required this.createdAt,
@@ -23,14 +23,14 @@ class Comment {
     required this.replies,
   });
 
-  factory Comment.fromJson(Map<String, dynamic> json) => Comment(
+  factory CommentData.fromJson(Map<String, dynamic> json) => CommentData(
         id: json['id'],
         text: json['text'],
         createdAt: json['createdAt'],
         liked: json['liked'],
         disliked: json['disliked'],
-        feedback: Feedback.fromJson(json['feedback']),
-        user: User.fromJson(json['user']),
+        feedback: FeedbackData.fromJson(json['feedback']),
+        user: UserOverview.fromJson(json['user']),
         replies: List<Reply>.from(
           json['replies'].map(
             (reply) => Reply.fromJson(reply),
diff --git a/lib/models/comment/feedback.dart b/lib/models/comment/feedback.dart
index 57e756b..d51d67f 100644
--- a/lib/models/comment/feedback.dart
+++ b/lib/models/comment/feedback.dart
@@ -1,10 +1,10 @@
-class Feedback {
+class FeedbackData {
   final int like;
   final int dislike;
 
-  const Feedback({required this.like, required this.dislike});
+  const FeedbackData({required this.like, required this.dislike});
 
-  factory Feedback.fromJson(Map<String, dynamic> json) => Feedback(
+  factory FeedbackData.fromJson(Map<String, dynamic> json) => FeedbackData(
         like: json['like'],
         dislike: json['dislike'],
       );
diff --git a/lib/models/comment/reply.dart b/lib/models/comment/reply.dart
index 3ba0185..02ce66e 100644
--- a/lib/models/comment/reply.dart
+++ b/lib/models/comment/reply.dart
@@ -7,8 +7,9 @@ class Reply {
   final String createdAt;
   final bool liked;
   final bool disliked;
-  final Feedback feedback;
-  final User user;
+  final FeedbackData feedback;
+  final UserOverview user;
+  final UserOverview toUser;
 
   const Reply({
     required this.id,
@@ -18,6 +19,7 @@ class Reply {
     required this.disliked,
     required this.feedback,
     required this.user,
+    required this.toUser,
   });
 
   factory Reply.fromJson(Map<String, dynamic> json) => Reply(
@@ -26,8 +28,9 @@ class Reply {
         createdAt: json['createdAt'],
         liked: json['liked'],
         disliked: json['disliked'],
-        feedback: Feedback.fromJson(json['feedback']),
-        user: User.fromJson(json['user']),
+        feedback: FeedbackData.fromJson(json['feedback']),
+        user: UserOverview.fromJson(json['user']),
+        toUser: UserOverview.fromJson(json['toUser']),
       );
 
   Map<String, dynamic> toJson() => {
@@ -38,5 +41,6 @@ class Reply {
         'disliked': disliked,
         'feedback': feedback.toJson(),
         'user': user.toJson(),
+        'toUser': toUser.toJson(),
       };
 }
diff --git a/lib/models/comment/user.dart b/lib/models/comment/user.dart
index 10ebbf3..3483134 100644
--- a/lib/models/comment/user.dart
+++ b/lib/models/comment/user.dart
@@ -1,11 +1,12 @@
-class User {
+class UserOverview {
   final int id;
   final String fullName;
   final String? photo;
 
-  const User({required this.id, required this.fullName, required this.photo});
+  const UserOverview(
+      {required this.id, required this.fullName, required this.photo});
 
-  factory User.fromJson(Map<String, dynamic> json) => User(
+  factory UserOverview.fromJson(Map<String, dynamic> json) => UserOverview(
         id: json['id'],
         fullName: json['fullName'],
         photo: json['photo'],
diff --git a/lib/models/item_overview.dart b/lib/models/item_overview.dart
new file mode 100644
index 0000000..50ddec4
--- /dev/null
+++ b/lib/models/item_overview.dart
@@ -0,0 +1,57 @@
+import 'package:didvan/models/category.dart';
+
+class ItemOverview {
+  final int id;
+  final String title;
+  final String image;
+  final String description;
+  final int timeToRead;
+  final String reference;
+  final bool forManagers;
+  final String createdAt;
+  final String type;
+  final List<Category> categories;
+
+  const ItemOverview({
+    required this.id,
+    required this.title,
+    required this.image,
+    required this.description,
+    required this.timeToRead,
+    required this.reference,
+    required this.forManagers,
+    required this.createdAt,
+    required this.type,
+    required this.categories,
+  });
+
+  factory ItemOverview.fromJson(Map<String, dynamic> json) => ItemOverview(
+        id: json['id'],
+        title: json['title'],
+        image: json['image'],
+        description: json['description'],
+        timeToRead: json['timeToRead'],
+        reference: json['reference'],
+        forManagers: json['forManagers'],
+        createdAt: json['createdAt'],
+        type: json['type'],
+        categories: List<Category>.from(
+          json['categories'].map(
+            (cat) => Category.fromJson(cat),
+          ),
+        ),
+      );
+
+  Map<String, dynamic> toJson() => {
+        'id': id,
+        'title': title,
+        'image': image,
+        'description': description,
+        'timeToRead': timeToRead,
+        'reference': reference,
+        'forManagers': forManagers,
+        'createdAt': createdAt,
+        'type': type,
+        'categories': categories.map((e) => e.toJson()).toList(),
+      };
+}
diff --git a/lib/models/requests/news.dart b/lib/models/requests/news.dart
new file mode 100644
index 0000000..1e17e56
--- /dev/null
+++ b/lib/models/requests/news.dart
@@ -0,0 +1,13 @@
+class NewsRequestArgs {
+  final int page;
+  final String? startDate;
+  final String? endDate;
+  final String? search;
+
+  const NewsRequestArgs({
+    required this.page,
+    this.startDate,
+    this.endDate,
+    this.search,
+  });
+}
diff --git a/lib/models/requests/radar.dart b/lib/models/requests/radar.dart
new file mode 100644
index 0000000..9a28fae
--- /dev/null
+++ b/lib/models/requests/radar.dart
@@ -0,0 +1,15 @@
+class RadarRequestArgs {
+  final int page;
+  final List<int> categories;
+  final String? startDate;
+  final String? endDate;
+  final String? search;
+
+  const RadarRequestArgs({
+    required this.page,
+    this.categories = const [],
+    this.startDate,
+    this.endDate,
+    this.search,
+  });
+}