gistfile1.cs

public interface IMessage{}

[Serializable]
public class Created<T> :IMessage
{
    public Guid Id { get; set; }
    public T Entity { get; set; }

    public Created(T entity):this()
    {
        Entity = entity;
    }

    public Created()
    {
        Id = Guid.NewGuid();
    }

    public Created(Guid id, T entity):this(entity)
    {
        Id = id;
    }
}

public void PublishMessage()
{
    var service = new Service("Test", 123M, "EA", "1235");
    var message = new Created<Service>(service);

    ObjectFactory.GetInstance<IEventAggregator>().SendMessage(message);
}

public class LogEntityCreation : Consumes<Created<Service>>.All, IBusService
{
    private IServiceBus _bus;
    public void Consume(Created<Service> message)
    {
        Console.WriteLine(string.Format("Entity: {0} was created on {1}", message.Entity.GetType(), message.Entity.Created));
    }

    public void Dispose()
    {
        _bus.Dispose();
    }

    public void Start(IServiceBus bus)
    {
        _bus = bus;
    }

    public void Stop()
    {
        throw new NotImplementedException();
    }
}

LogEntityCreation : Start should have a _bus.Subscribe(this) in it...

Otherwise the consumer is never subscribed.