Preparation
The use selects how much they want to withdraw (0.01 to 1.0) P
Get R, T, poolAddr
from Statechain.
rune = P * stakerUnits / poolUnits * R
token = P * stakerUnits/poolUnits * T
Transaction
It is a non-zero transaction (0.00000001 BNB) in order to send the MEMO to the statechain.