This is the analog to the standard Private Inbox example, but leveraging the NKeys/JWT authentication method.
Replies to a request using the built-in request-reply pattern
all share the same subject pattern _INBOX.>. For multi-user
applications where isolation of messages within the same account
is required, an explicit inbox prefix can be used when a
client connects to the server. This combined with explicit
permissions prevents users from snooping on service replies.