const mock = {
  "track_id": 0,
  "deadline: {
      "start": "2023-09-01",
      "end": "2023-10-01",
  },
  "title": "Трек обучения",
  "skill_tracks": [
    {
        "id": 0,
        "title": "Python",
        "priority": 0,
        "deadline: {
          "start": "2023-09-01",
          "end": "2023-10-01",
        },
        "materials": [
          {
            "id": 0,
            "title": "Синтаксис",
            "progress": 96,
            "priority": 0,
            "deadline: {
              "start": "2023-09-01",
              "end": "2023-10-01",
            },
            "tasks": [{
				"id": 0,
			    "title": "Задачи",
				"priority": 0,
			}],
            "tests": [{
				"id": 0,
			    "title": "Тесты",
				"priority": 0,
			}],
          },
		  {
            "id": 1,
            "title": "Функции",
            "progress": 100,
            "priority": 1,
            "deadline: {
              "start": "2023-09-01",
              "end": "2023-10-01",
            },
            "tasks": [{
				"id": 0,
			    "title": "Задачи",
				"priority": 0,
			}],
            "tests": [{
				"id": 0,
			    "title": "Тесты",
				"priority": 0,
			}],
          },
          {
            "id": 2,
            "title": "Условия",
            "progress": 100,
            "priority": 2,
            "deadline: {
              "start": "2023-09-01",
              "end": "2023-10-01",
            },
            "tasks": [{
				"id": 0,
			    "title": "Задачи",
				"priority": 0,
			}],
            "tests": [{
				"id": 0,
			    "title": "Тесты",
				"priority": 0,
			}],
          },
		  {
            "id": 3,
            "title": "Выражения",
            "progress": 100,
            "priority": 3,
            "deadline: {
              "start": "2023-09-01",
              "end": "2023-10-01",
            },
            "tasks": [{
				"id": 0,
			    "title": "Задачи",
				"priority": 0,
			}],
            "tests": [{
				"id": 0,
			    "title": "Тесты",
				"priority": 0,
			}],
          }
        ]
    },
	{
        "id": 1,
        "title": "GO",
        "priority": 1,
        "deadline: {
          "start": "2023-09-01",
          "end": "2023-10-01",
        },
        "materials": [
          {
            "id": 0,
            "title": "Синтаксис",
            "progress": 96,
            "priority": 0,
            "deadline: {
              "start": "2023-09-01",
              "end": "2023-10-01",
            },
            "tasks": [{
				"id": 0,
			    "title": "Задачи",
				"priority": 0,
			}],
            "tests": [{
				"id": 0,
			    "title": "Тесты",
				"priority": 0,
			}],
          },
		  {
            "id": 1,
            "title": "Условия",
            "progress": 100,
            "priority": 1,
            "deadline: {
              "start": "2023-09-01",
              "end": "2023-10-01",
            },
            "tasks": [{
				"id": 0,
			    "title": "Задачи",
				"priority": 0,
			}],
            "tests": [{
				"id": 0,
			    "title": "Тесты",
				"priority": 0,
			}],
          },
          {
            "id": 2,
            "title": "Выражения",
            "progress": 100,
            "priority": 2,
            "deadline: {
              "start": "2023-09-01",
              "end": "2023-10-01",
            },
            "tasks": [{
				"id": 0,
			    "title": "Задачи",
				"priority": 0,
			}],
            "tests": [{
				"id": 0,
			    "title": "Тесты",
				"priority": 0,
			}],
          },
		  {
            "id": 3,
            "title": "Структуры данных",
            "progress": 100,
            "priority": 3,
            "deadline: {
              "start": "2023-09-01",
              "end": "2023-10-01",
            },
            "tasks": [{
				"id": 0,
			    "title": "Задачи",
				"priority": 0,
			}],
            "tests": [{
				"id": 0,
			    "title": "Тесты",
				"priority": 0,
			}],
          }
        ]
    }
  ]
}