NHIbernateMessageHandler.cs

 public class NHibernateMessageHandler:IHandleMessages<NHibernateMessage>
    {
        readonly ISession session;

        public NHibernateMessageHandler(ISession session)
        {
            this.session = session;
        }

        public void Handle(NHibernateMessage message)
        {
            session.Save(new PersistentEntity
                             {
                                 Data = "Whatever " + DateTime.Now.ToShortTimeString()
                             });
        }
    }