title: Firebase messaging multiple notification in single request
body: <p>I must to send multiple notifications with single request using Firebase Messaging. Below is example how i send notification to single user. Any help will be very appreciate.</p>
  
  <pre><code>  curl --header "Authorization: key=***********" --header "Content-Type: application/json" -d '{
    "notification": {
      "title": "FCM Message",
      "body": "This is an FCM Message"
     },
    "to": "********************************************",
     }' https://fcm.googleapis.com/fcm/send
  </code></pre>