Some Customer service calendar Calendars have only one "calendar_calendar_rules" and some record have multiple "calendar_calendar_rules". If all working hours are the same when creating the Customer service calendar, then there will only be one “calendar_calendar_rules”. Now if we modify the working hours and save it, then it will be divided into two or more. Developers are using Calendar entity in some plugin logics to identify the Working days and hours. Since responses varies now for different Calendars, we are encountering issues with the current logic.  In addition, the "calendar rule" entity is a special entity that cannot manipulate records through API. Please unify the Json format of calendar entity, otherwise this will have a huge impact on Business