protected function createSignup(array $data, $userId)
    {
        return Signup::create([
            'user_id' => $userId,
            'firstname' => $data['firstname'],
            'surname' => $data['surname'],
            'gender' => $data['gender'],
            'email' => $data['email'],
            'mobile_number' => $data['mobile_number'],
        ]);
    }