ERC20Withdraw (index_topic_1address rootToken, index_topic_2address childToken, address withdrawer, index_topic_4address receiver, uint256 amount)
[topic 0]:0x9c4f744b2e971d7058a9d8f43977e0e17bf7d57a48659f0e18541b7ee3d022e4
0x000000000000000000000000803c4547884cf4704bb974ec83056fd05936f87200000000000000000000000000000000000000000000000a1544be879ea80000