WithdrawApproved (address , address , uint256 , bool )
[topic 0]:0x7f0c003677f30ffea37ab4d962a31a1ee60012a2420545fc9c494b3b0098aac8
0x000000000000000000000000000000000000000000000000000000000b8a21250000000000000000000000000000000000000000000000000000000000000001