$data = array(
        'priority' => 'high', // must have
        "content-available" => false, // must have
        "delay_while_idle" => false, // must have
        "dry_run" => false, // must have
        'data' => [
            "content-available" => '1', // must have
            "force-start" => '1', // must have
            'title' => $title,
            'message' => $message,
            'notId' => time()
                                ],
    'registration_ids' => [$firebase_token]
);