account:orders_v3_#{address}
For example: account:orders_v3_#0xbcc6D643e4159A75ED1dB4e13330230B82F2AEe5. The # is part of the channel name.
MESSAGE PAYLOAD FORMAT
One order per message, wrapped in
order, even when one engine command changed several of your orders. Those arrive as separate publications. The inner object is the same one GET /orders-v3 returns in its data.orders array.