How long it takes for the Plugging of the item to be completed once it is initiated, if you care.
The type of action being performed when you act on this Socket Type. The most common value is "insert plug", but there are others as well (for instance, a " Masterwork" socket may allow for Re-initialization, and an Infusion socket allows for items to be consumed to upgrade the item)
Data related to what happens while a plug is being inserted, mostly for UI purposes.