WithdrawCollateral (index_topic_1address src, index_topic_2address to, index_topic_3address asset, uint256 amount)
[topic 0]:0xd6d480d5b3068db003533b170d67561494d72e3bf9fa40a266471351ebba9e16
0x0000000000000000000000000000000000000000000000008ac7230489e80000