Overriding the default PushNotification From Firebase CloudMessaging

[samirgcofficial]

I can override the push notification when app is in running mode with my custom notification. But when the app is in background or killed i am getting the default notification from the firebase cloud messaging.
[Service(Exported = true)] [IntentFilter(new[] { "com.google.firebase.MESSAGING_EVENT" })] public class AsdFirebaseMessagingService : FirebaseMessagingService { private const int NotificationId = 0;

        public override void OnMessageReceived(RemoteMessage remoteMessage)
        {
            base.OnMessageReceived(remoteMessage);
            Console.WriteLine("Message Received");
            if (remoteMessage.Data.TryGetValue("title", out var title) &&
                remoteMessage.Data.TryGetValue("body", out var body))
            {
                ShowNotification(title, body);
            }
        }
    }