Optionalcontent_OptionaldescriptionThe description of the file.
The name of the file.
OptionalsizeThe filesize, if the integration provided it.
Optionalstory_The ID of the linked story.
Optionalthumbnail_The URL of the thumbnail, if the integration provided it.
The integration type of the file (e.g. google, dropbox, box).
Optionaluploader_The UUID of the member that uploaded the file.
The URL of linked file.
The content type of the image (e.g. txt/plain).