Helper.php

<?php
namespace App\Helpers;
use \Firebase\JWT\JWT;
use Illuminate\Support\Str;
class Utils
{
    public static function generateToken($payload){

        $tokenId    = (string) Str::uuid();
        $issuedAt   = time();
        $notBefore  = $issuedAt;
        $expire     = $issuedAt + config('jwt.expire');
        $serverName = config('app.domain');


        $data = [
                    'iat' => $issuedAt,
                    'jti' => $tokenId,
                    'iss' => $serverName,
                    'nbf' => $notBefore,
                    'exp' => $expire,
                    'data' => $payload
                ];

        $secretKey = config('jwt.key');
        $jwt = JWT::encode($data,$secretKey,'HS512');
        return $jwt;
    }
}