curl --request GET \
  --url https://api.example.com/v1/crm/requests/{request_id}/weekday/

{
  "id": 123,
  "request": 123,
  "request_inventory": 123,
  "client": 123,
  "work_days": 16383,
  "rest_days": 16383,
  "rest_weekdays": [
    123
  ],
  "custom": true,
  "exclude_rest": true
}