Subscribe to one or more channels. This is the same method as /private/subscribe, but it can only be used for ‘public’ channels.
Note - This method has distinct API rate limiting requirements: Sustained rate: ~3.3 requests/second. For more information, see Rate Limits.
📖 Related Article: Market Data Collection Best Practices
A list of channels to subscribe to.
["deribit_price_index.btc_usd"]