Optionalrate_Maximum commission rate numerator. The maximum rate is this value divided by CommissionRateDenominator.
Optionalrate_Minimum commission rate numerator. The minimum rate is this value divided by CommissionRateDenominator.
OptionalstartEpoch when the commission rate bound will go in effect.
CommissionRateBoundStep sets a commission rate bound (i.e. the minimum and maximum commission rate) and its starting time.