signable_contentis a concatenation of the following:
saltis a random string, it should change from request to request and be sufficiently random.
access_tokenstored locally and data from the request and checks if it matches the one in the request. Any request failing signature check must return
timereleaseallows to set a lock on assets, like images uploaded for a media element, so that even if the client application knew the url to the asset, the user would not be able to view it until a specific point in time.
falprefix including pro icons. To specify an icon the tabs response must contain
iconfield with name of the desired icon. By default Studio use