Array
(
    [endpoint] => https://fcm.googleapis.com/fcm/send/dwgtnFHljYQ:APA91bH5MwSyMp6HNLFM_IqFxdmk7NP22NxmsINxzSzVzZObOF9ljbBcA6rERHhRLZhEiNFU4WWmZIYaQqB_LdeuaSGMGt8o4xP2Ad159QOw9k4Anx_6M2_efS1drr596YxNglLCz2L6
    [expirationTime] => 
    [keys] => Array
        (
            [p256dh] => BL1R7tPuVosuB4L8v3hG480AwGpFRv7NeC3o_HuwowA0UmGpnveoYAWjk2MS9qfh9a7JKHMj1fjUta2OWT7_3uc
            [auth] => d3Nu9v7QqDa52JYKSFNyMQ
        )

)
