{
 "data": {
  "body": "here is body",
  "title": "Title",
  "click_action": "YOUR_ACTION"
 },
 "to": "ffEseX6vwcM:APA91bF8m7wOF MY FCM ID 07j1aPUb"
}

<activity
            android:name=".NotificationActivity"
            android:screenOrientation="portrait"
            android:theme="@style/Theme.AppCompat.Dialog"
            android:windowSoftInputMode="stateHidden" >

            <intent-filter>
                <action android:name="YOUR_ACTION" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

Bundle bundle=getIntent().getExtras();
        if(bundle!=null) {
            for (String key : bundle.keySet()) {
                Object value = bundle.get(key);
                Log.d("DATA_SENT", String.format("%s %s (%s)", key,
                        value.toString(), value.getClass().getName()));
            }
        }

{
 "data": {
  "body": "here is body",
  "title": "Title"
 },
"notification": {
  "body": "here is body",
  "title": "Title",
  "click_action": "YOUR_ACTION"
 },
 "to": "ffEseX6vwcM:APA91bF8m7wOF MY FCM ID 07j1aPUb"
}

this.notificationListener =
  FCMNotification.onNotification((notificationOpen: NotificationOpen) => {
    const localNotification = new firebase.notifications.Notification({  sound: 'default', show_in_foreground: true})
    .setNotificationId(notificationOpen.notificationId)
    .setTitle(notificationOpen.title)
    .setSubtitle(notificationOpen.subtitle)
    .setBody(notificationOpen.body)
    .setData(notificationOpen.data)
    .android.setChannelId('cuddlynest')
    .android.setColor('#000000')
    .android.setAutoCancel(true)
    .android.setPriority(firebase.notifications.Android.Priority.High)
    .android.setSmallIcon('ic_stat_ic_notification');
  }