{
    "posts": [{ "id": 1, "title": "json-server", "author": "typicode" }],
    "comments": [{ "id": 1, "body": "some comment", "postId": 1 }],
    "profile": { "name": "typicode" },
    "students": [
        { "id": 1, "last_name": "Ivanov", "first_name": "Ivan", "bdate": "01.01.1999", "groupId": 1 },
        { "id": 2, "last_name": "Petrov", "first_name": "Petr", "bdate": "12.12.2000", "groupId": 1 },
        { "id": 3, "last_name": "Sidorov", "first_name": "Sidr", "bdate": "12.12.2000", "groupId": 2 }
    ],
    "groups": [
        { "id": 1, "name": "SomeGroup-11" },
        { "id": 2, "name": "SomeGroup-12" }
    ]
}