Orderbook unsubscribe not working

[alexander-hagen]

I have successfully subscribed to the orderbook channel but am unable to unsubscribe. This is my request.

{
    "event":"unsub",
    "params":{
        "cb_id":"btcusdt",
        "channel":"market_btcusdt_simple_depth_step0"
    }
}

This request times out and no response is received. Can you please provide an example on how to unsubscribe from the orderbook.

According to the documentation, the unsubscribe response does not have an “event_rep” element. If indeed not available, may I request to have it added to allow differentiating response messages!