Would this mean that relays would need to support both formats? (falling back to json if the client doesn't support it)
Discussion
Nope, relays could advertise that they support it or not. Would be completely optional.
But then you specifically request data in this firmat from the relay, so that you need no detection on client side, right?
It would be advertised in the relay metadata if it’s supported or not.
That part is clear, but how does the relay decide which format to send events in?
