Not used in new records stored with Akka.net v1.1 and above, but old records may have this as `true` if it was a non-permanent delete.

Returns the persistent payload's manifest if available.

This persistent message's payload.

Persistent id that journals a persistent message.

Sender of this message

Sequence number of this persistent message.

Unique identifier of the writing persistent actor. Used to detect anomalies with overlapping writes from multiple persistent actors, which can result in inconsistent replays.