Optional
rate_Maximum commission rate numerator. The maximum rate is this value divided by CommissionRateDenominator.
Optional
rate_Minimum commission rate numerator. The minimum rate is this value divided by CommissionRateDenominator.
Optional
startEpoch 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.