sow-and-subscribe-select
Including the basic AMPS library:
using AMPS.Client;
using AMPS.Client.Message;
using AMPS.Client.Exceptions;
Constructing the command:
Command cmd = new Command(Message.Commands.SOWAndSubscribe)
.setTopic(topic)
.setOrderBy("/id DESC")
.setOptions(Message.Options.Select("-/,+/fieldOne"))
;
The command can now be used in execute or executeAsync.