Pure: build a subscribe message — { action, symbol, exchange, mode }, where mode is the numeric OpenAlgo data mode. Depth subscriptions may request a depth_level (broker-dependent: 5/20/30/50).
{ action, symbol, exchange, mode }
mode
depth_level
Optional
Pure: build a subscribe message —
{ action, symbol, exchange, mode }, wheremodeis the numeric OpenAlgo data mode. Depth subscriptions may request adepth_level(broker-dependent: 5/20/30/50).