@Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        Map<String, String> data = remoteMessage.getData();
        Intent intent = new Intent("com.google.firebase.MESSAGING_EVENT");
        Bundle extras = new Bundle();
        for (String key: data.keySet()) {
            extras.putString(key, data.get(key));
        }
        intent.putExtra(Constants.Args.EXTRA, extras);
        sendBroadcast(intent);
    }