Examples

1. Send to a Single Device

{
  "title": "New Message",
  "subtitle": "You have a new message from John",
  "data": {
    "messageId": "12345",
    "senderId": "user_001"
  },
  "token": "fGhI1jKlMnOpQrStUvWxYz..."
}

2. Send to Multiple Devices

{
  "title": "System Maintenance",
  "subtitle": "Scheduled maintenance tonight at 10 PM",
  "tokens": [
    "fGhI1jKlMnOpQrStUvWxYz...",
    "aBcD2eFgHiJkLmNoPqRsTu...",
    "xYz3AbCdEfGhIjKlMnOpQr..."
  ]
}

3. Send to a Topic

{
  "title": "Breaking News",
  "subtitle": "Major announcement: New product launch!",
  "data": {
    "articleId": "news_789",
    "category": "announcements"
  },
  "topic": "news"
}

4. Send to Default Topic (All Subscribers)

{
  "title": "App Update Available",
  "subtitle": "Version 2.0 is now available"
}

03 May 2026