API structure has changed
  3 structure changes including:
    
    3 Modifications
        Modified
        3
      
      POST /previews
              - Body
- 
   content type Modified
    - references property Added
 
POST /validations
              - Body
- 
   content type Modified
    - references property Added
 
POST /versions
              - Body
- 
   content type Modified
    - references property Added
 
