Anonymous Ticks
This allows simultaneous tick subscriptions to multiple markets.
Upon subscribing to a market, the client will first receive a snapshot of latest ticker, followed by updates. See the data model: Get Market Tick
Either it can be subscribed from a single symbol (by reaching to this endpoint)
/trading-api/v1/market-data/tick/{symbol}
Or tick of different markets can be subscribed to, and controlled by parameters in the subscription message listed below
/trading-api/v1/market-data/tick