CrestRoad/laravel/config/jwt.php

<?php

return [
    "secret" => "wdm7n7IUGiRRA4q31sV1c7JxNTO5bE5Bb2uXt7",   //jwt SHA256 signature use the secret
    "expire_in" => 604800,                            //jwt expire_in the times(seconds) , default 604800(a week)
];