Upload a new file to the file manager. This endpoint uses multi-part form encoding, rather than JSON.
On success, the response will include the metadata for the file. See this page for an example.
Files uploaded with the optional parameter hidden set to true will be inaccessable via the file manager or the URLs returned in the response. The hidden parameter is intended for files that are attaached to engagements. Changing hidden from false to true will NOT hide existing files.
Note: Files that contain sensitive or confidential information should not be uploaded to file manager, as all uploaded files are stored on a public CDN where the files can be accessed by anyone with the file URL.