[
    {
        "endpoint": "https://fcm.googleapis.com/fcm/send/faDbUe4gQ5k:APA91bHRAZx2Z38QfkGEzmB7rZp6Ob5xytAtLFennkgzXCAVeWCslFVGVjtUmrRxZJB-LpoRXuw1HvsuHGUhndbnmIwGRO3gEzl82sgkWMbcdkcnLfpHHJiLclI-3MLAxbKoQVRnX08q",
        "expirationTime": null,
        "keys": {
            "p256dh": "BCA-pNzxzy5R0ongFDLEWmuXMwCTHjkD_tfgFZU7WN8t6ksymZlVQWa9FM_kp_UHiWY08_LoiSDJVtNwXA4iEqg",
            "auth": "7hKv2HqAD6uekyYt-AK1PQ"
        }
    }
]