JSON structure of firebase cloud messaging

FCM_json_sample.json

// HTTP URL : https://fcm.googleapis.com/fcm/send
{
  "registration_ids":["XXXXXXXXXXXX:APA91XXXX7ziO-XXXXXXXXXXXXXXXXXXXXXX3B7OzLmNoAfHmZ3ju1M8gk7d-fYwXXXXXXdOHiwNhP6ThXNizSAu-Q0RkywWR8YCEiXf6a4Y803HY1t-XXXXXXXXXXX"],
  "notification": {
      "title":"Venue change for Avengers secret meet",
      "body":"Tap here to open location on your phone"
  },
  "data": {
    "latitude" : "39.204720",
    "longitude" : "-96.564909",
    "costume_required" : true,
    "duration" : 3600,
    "starts_at" : "02:00 AM, August-20, 2017",
    "can_bring_sidekick" : false
  }
}