Group settings - Virtual background

The schema for group settings shows that we should get this information:

   "virtual_background_settings": {
      "allow_upload_custom": true,
      "allow_videos": true,
      "enable": true,
      "files": [
        {
          "id": "fawegw4tq43t35h4nhgfnethswe",
          "is_default": true,
          "name": "File name",
          "size": 1435,
          "type": "image"
        }
      ]

When I use the API to pull this information, I only receive these attributes:
- name
- type
- is_default


How do I get the size and ID?  I need the ID to be able to remove virtual backgrounds.

The API used is:  https://api.zoom.us/v2/Accounts/groupID/settings

Thanks,
Aaron