diff --git a/src/@awesome-cordova-plugins/plugins/firebase-x/index.ts b/src/@awesome-cordova-plugins/plugins/firebase-x/index.ts
index a20bf3688..1744b9f5f 100644
--- a/src/@awesome-cordova-plugins/plugins/firebase-x/index.ts
+++ b/src/@awesome-cordova-plugins/plugins/firebase-x/index.ts
@@ -112,7 +112,19 @@ export interface FirebaseUser {
    */
   name?: string;
 }
-
+export interface MessagePayload {
+  title: string;
+  body: string;
+  collapse_key: string;
+  from: string;
+  id: string;
+  messageType: string;
+  notification_foreground: string;
+  sent_time: string;
+  show_notification: string;
+  ttl: string;
+  tap?: 'background' | 'foreground';
+}
 /**
  * @name Firebase X
  * @description
@@ -237,7 +249,7 @@ export class FirebaseX extends AwesomeCordovaNativePlugin {
   @Cordova({
     observable: true,
   })
-  onMessageReceived(): Observable<any> {
+  onMessageReceived<T = { [key: string]: string }>(): Observable<MessagePayload & T> {
     return;
   }