Get a peer card for a specific peer relationship.
Returns the peer card that the observer peer has for the target peer if it exists. If no target is specified, returns the observer’s own peer card.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Optional target peer to retrieve a card for, from the observer's perspective. If not provided, returns the observer's own card
Successful Response
The peer card content, or None if not found