Yes, you can. First, make sure you are signed in to both your Sonos and Alexa accounts with your SiriusXM streaming username and password. Then enable the Sonos skill on your Alexa.
Use simple commands like the following to get started: “Alexa, play [channel name] on SiriusXM in [Sonos speaker nickname].” For example, you might say, “Alexa, play Classic Vinyl on SiriusXM in Family Room.”