userShare - sETHUserClaimForKnot[BLS][Alice] = 
(newAccumulatedETHPerShare * 2 * 10^18) / PRECISION - (5 * 10^18 * accumulatedETHPerFreeFloatingShare) / PRECISION
sETHUserClaimForKnot[_blsPubKey][msg.sender] =
                (accumulatedETHPerShare * sETHStakedBalanceForKnot[_blsPubKey][msg.sender]) / PRECISION
