Lumen JWT Authentication without Eloquent and MySQL - php

Question

I'm developing an API that uses not standard database connection that is not supported by Laravel by default. Because of that I am not able to use Eloquent Models to create JWT tokens and authenticate users. I have already implemented a custom user model:
use App\Repositories\Technician as TechnicianRepository;
use Illuminate\Contracts\Auth\Authenticatable;
use Tymon\JWTAuth\Contracts\JWTSubject;
class Technician implements Authenticatable, JWTSubject {
public function __construct(array $data) {
$this->repository = new TechnicianRepository;
foreach ($this->repository->create($data) as $attribute => $value) {
$this->{$attribute} = $value;
}
}
public function getAuthIdentifierName() {
return 'id';
}
public function getAuthIdentifier() {
return $this->{$this->getAuthIdentifierName()};
}
public function getAuthPassword() {
return decrypt($this->password);
}
public function getRememberToken() {}
public function setRememberToken($value) {}
public function getRememberTokenName() {}
public function getJWTIdentifier()
{
return $this->id;
}
public function getJWTCustomClaims()
{
return [];
}
}
Using this model I am able to successfully generate a JWT token in my AuthController like this:
$technician = new Technician([
'email' => $request->email,
'phone' => $request->phone,
'password' => encrypt($request->password)
]);
$token = app('auth')->login($technician);
However I have no idea how to furtherly authenticate users based on the generated JWT token that is passed with a request.
For now I have the following contents in boot method of AuthServiceProvider:
public function boot()
{
$this->app['auth']->viaRequest('api', function ($request) {
return app('auth')->setRequest($request)->user();
});
}
And the following logic in Authenticate middleware:
if ($this->auth->guard($guard)->guest()) {
return Response::fail([
'auth' => array('Access denied - authorization is required')
], 401);
}
return $next($request);
Even if providing the right JWT token for a user, the middleware denies access.
Any help is appreciated, because I have no idea how to develop user authentication furtherly.