@type t() :: %SuperPi.Durable.Schemas.Submission{
  __meta__: term(),
  conversation_id: term(),
  created_seq: term(),
  entry_id: term(),
  id: term(),
  inserted_at: term(),
  kind: term(),
  payload: term(),
  request_id: term(),
  settlement: term(),
  status: term(),
  updated_at: term(),
  updated_seq: term(),
  when_busy: term()
}