[
    {
        "id": 1,
        "teacher": {
            "id": 3,
            "username": "user",
            "email": "j.gabrys775@gmail.com",
            "firstname": "Jakub",
            "lastname": "Gabry\u015b",
            "subjects": [
                {
                    "id": 1,
                    "name": "j\u0119zyk francuski"
                }
            ]
        },
        "subject": {
            "id": 1,
            "name": "j\u0119zyk francuski"
        },
        "groups": [
            {
                "id": 6,
                "name": "GRUPA 3C",
                "students": [
                    {
                        "id": 1,
                        "firstname": "Jan",
                        "lastname": "Testowy",
                        "user": {
                            "id": 3,
                            "username": "user",
                            "email": "j.gabrys775@gmail.com",
                            "firstname": "Jakub",
                            "lastname": "Gabry\u015b",
                            "subjects": [
                                {
                                    "id": 1,
                                    "name": "j\u0119zyk francuski"
                                }
                            ]
                        },
                        "contactNumber": 666666666
                    }
                ]
            },
            {
                "id": 7,
                "name": "GRUPA ZZC",
                "students": [
                    {
                        "id": 1,
                        "firstname": "Jan",
                        "lastname": "Testowy",
                        "user": {
                            "id": 3,
                            "username": "user",
                            "email": "j.gabrys775@gmail.com",
                            "firstname": "Jakub",
                            "lastname": "Gabry\u015b",
                            "subjects": [
                                {
                                    "id": 1,
                                    "name": "j\u0119zyk francuski"
                                }
                            ]
                        },
                        "contactNumber": 666666666
                    }
                ]
            }
        ]
    }
]