From Garry's Mod
Returns a list of addons the player have subscribed to on the workshop. This list will also include "Floating" .gma addons that are mounted by the game.
A table with 6 keys (downloaded, models, title, file, mounted, wsid)
Will return a list of all the workshop addons you have downloaded / are downloading.
1: downloaded = true models = 0 title = Title of Addon file = addons/title_of_addon_123456789.gma mounted = true wsid = 123456789