CreateAUserPayload.php

<?php

namespace App\Application;

use Symfony\Component\Validator\Constraints as Assert;

final class CreateAUserPayload
{
    /**
     * @Assert\Type(type="string")
     */
    public $name;

    /**
     * @Assert\Type(type="integer")
     */
    public $age;

    public function __construct($name, $age)
    {
        $this->name = $name;
        $this->age = $age;
    }
}