UnsubscribeLessonGroupDay

{
  "Criteria": {
    "ReasonId": null,
    "LessonGroupId": "00000000-0000-0000-0000-000000000000",
    "StudentId": "00000000-0000-0000-0000-000000000000",
    "Date": "2025-10-31T00:37:13.6886464+01:00",
    "Comment": "string_example"
  },
  "Context": {
    "DivisionId": "00000000-0000-0000-0000-000000000000",
    "Language": "string_example",
    "ShopId": "00000000-0000-0000-0000-000000000000",
    "SessionId": "00000000-0000-0000-0000-000000000000",
    "Origin": 0,
    "Password": "string_example",
    "Encode": false,
    "AccessToken": "string_example"
  }
}

{
  "ValidationResult": {
    "IsValid": false,
    "Message": "string_example",
    "brokenRuleName": null
  }
}