Get watermark for folder
GET https://{{api.box.com}}/2.0/folders/:folder_id/watermark
Retrieve the watermark for a folder.
https://developer.box.com/reference/get-folders-id-watermark
RESPONSES
status: OK
{"watermark":{"created_at":"2012-12-12T10:53:43-08:00","modified_at":"2012-12-12T10:53:43-08:00"}}