Send to browser

      
  curl -X POST -H "Authorization: key=YOUR-SERVER-KEY" -H "Content-Type: application/json" -d '{
    "notification": {
      "title": "Portugal vs. Denmark",
      "body": "5 to 1",
      "icon": "firebase-logo.png",
      "click_action": "http://localhost:8081"
    },
    "to": "YOUR-IID-TOKEN"
  }' "https://fcm.googleapis.com/fcm/send"