curl --request GET \
  --url https://{tenant}.stamp.eu/rest/employees/{employee}/vacation_entitlements \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "employee_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "year": 123,
      "total_days": 123,
      "used_days": 123,
      "remaining_days": 123,
      "carried_over": 123,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  ]
}