Depending on the complexity of your automation, you can send the command via a simple web request to the ST Api. Sounds like you are only using on/off so setup in RM or WebCore should be straight forward. I do it via WebCore to keep location modes in sync. You will need to request a personal access token for the API.
There is a community project for samsung appliance drivers that use the API, you could also create something similar for Arlo if you are so inclined.
