{     "apids": [
        "apid1",
        "apid2"
    ],
    "android": {
        "alert": "$alertTitle",
        "extra": {
            "i": "$i",
            "n": "$n"
        }
    },
    "device_tokens": [
        "some device token",
        "another device token"
    ],
    "aps": {
        "badge": "auto",
        "alert": "$alertTitle"
    },
    "n": "$n",
    "i": "$i"
}