diff --git a/lib/4nk/models/FolderData.ts b/lib/4nk/models/FolderData.ts
index f5a2aec..dbe9ba5 100644
--- a/lib/4nk/models/FolderData.ts
+++ b/lib/4nk/models/FolderData.ts
@@ -1,5 +1,27 @@
 import type { RoleDefinition } from "./Roles";
 
+export interface FolderChatAttachment {
+  ext: string;
+  file_name: string;
+  title?: string;
+  type?: string;
+  category?: string;
+  base64: string;
+  note?: string;
+}
+
+export interface FolderChatData {
+  timestamp: number;
+  sender: string;
+  receiver: string;
+  fromRole: string
+  toRole: string
+  ia?: boolean;
+  title?: string;
+  message: string;
+  data?: FolderChatAttachment[];
+}
+
 export interface FolderData {
   folderNumber: string;
   name: string;
@@ -7,8 +29,8 @@ export interface FolderData {
   created_at: string;
   updated_at: string;
   notes: string[];
-  messages: string[];
-  messages_owner: string[];
+  messages: FolderChatData[];
+  messages_owner: FolderChatData[];
 }
 
 export function isFolderData(data: any): data is FolderData {