http://mf34jlghauz5pxjcmdymdqbe5pva4v24logeys446tdrgd5lpsrocmqd.onion/api/descriptor/bandwidth_file.html
This descriptor type
differs somewhat from others and treats our attr/exclude attributes as
follows... 'timestamp' is a reserved key for our mandatory header unix timestamp. 'content' is a reserved key for our bandwidth measurement lines. All other keys are treated as header fields.