{
      "message": {
        "token": "ekBmxQWra0NioHY5zqaxl5:APA91bEsSvMIri7wYtOSf_MT3-irhYD4B-8SB-typ0ngMuii9ja4josSGRcVWEuRiPQvMuHUU3e3OBmGaqrv_hf-9tny0lTdKwK-5MhqRw03Du62waOdXVU",
        "notification": {
          "title": "A new version of your Alitqan App is available",
          "body": "Click https://apps.apple.com/us/app/alitqan-american-school/id6476014314 to update"
        },
        "apns":{
     "payload":{
        "aps":{
           "sound":"mySound"
        }
     }
  }
      }
    }{
  "error": {
    "code": 404,
    "message": "Requested entity was not found.",
    "status": "NOT_FOUND",
    "details": [
      {
        "@type": "type.googleapis.com/google.firebase.fcm.v1.FcmError",
        "errorCode": "UNREGISTERED"
      }
    ]
  }
}