Get the number of unread LinkedIn messages/conversations.
Unread count
Number of unread conversations/messages
Credits consumed by this call. 0 for free endpoints, cached results, duplicates, and for every query that does not touch LinkedIn.
Seconds to wait before another call of the same type. 0 means no wait is needed.
Credit balance carried on every response so a caller never has to ask for it separately. Absent when the caller has no connected account.