App\Entity\Lesson.php

<?php

// ...
use Symfony\Component\Serializer\Annotation\Groups;

/**
 * @ApiResource(
 *     normalizationContext={"groups"={"lessonList"}},
 *     denormalizationContext={"groups"={"lessonCreate"}}
 * )
 * ...
 */
class Lesson
{
    /**
     * ...
     * @Groups({"lessonList"})
     */
    private $id;

    /**
     * ...
     * @Groups({"lessonList", "lessonCreate"})
     */
    public $name;

    /**
     * ...
     * @Groups({"lessonCreate"})
     */
    public $subject;

    // ...
}