[{"symbol":"BTCUSD_PERP","notionalCoef":1.50,//user symbol bracket multiplier, only appears when user's symbol bracket is adjusted "brackets":[{"bracket":1,// bracket level"initialLeverage":125,// the maximum leverage"qtyCap":50,// upper edge of base asset quantity"qtylFloor":0,// lower edge of base asset quantity"maintMarginRatio":0.004// maintenance margin rate"cum":0.0// Auxiliary number for quick calculation },]}]