The subject the message was sent to

The subscription ID where the message was dispatched.

A possible subject where the recipient may publish a reply (in the cases where the message represents a request).

The message's data (or payload)

Possible headers that may have been set by the server or the publisher.

Convenience to publish a response to the reply subject in the message - this is the same as doing nc.publish(msg.reply, ...).

Convenience method to parse the message payload as JSON. This method will throw an exception if there's a parsing error;

Convenience method to parse the message payload as string. This method may throw an exception if there's a conversion error