https://android.googleapis.com/gcm/send
Authorization: key=YOUR_API_ACCESS_KEY
Content-Type: application/json
{
"registration_ids":["YOUR_DEVICE_IDS"],
"data": {
"key1" : "value",
"key2" : "value"
}
}
{
"multicast_id": 0000000000000000000,
"success": 1,
"failure": 0,
"canonical_ids": 0,
"results": {
"message_id": "0:0000000000000000%0000000000000000"
}
}