Websocket doesn't work for perpetuals

Trying to subscribe to the perpetual symbols doesn’t seem to work

{"channel":"level2","jwt":"xxx","product_ids":["BTC-PERP-INTX"],"timestamp":yyyy,"type":"subscribe"}

Hi @heiseish

Websocket doesn’t support perpetual symbols yet. We’ve logged your feedback about this with our internal teams so we can continue improving our user experience. Most new features and improvements to our products come directly from feedback like yours, so it’s very valuable to us. While we can’t offer any specific timeline for adding features, we are constantly working to build products our customers will love.
If you want to stay up to date on the latest from Coinbase Cloud, you can also bookmark the following webpage and subscribe to email updates at the bottom of the page: https://www.coinbase.com/cloud/discover
We hope this is helpful, and please let us know if you have any other questions.
Regards,
Coinbase Support