RewardWithdraw (index_topic_1address withdrawer, uint256 amount)
[topic 0]:0x6553897c25961cd3a105492c25576d0552123ee868aca283e90f3b4224d7d177
0x00000000000000000000000050d9753d966764b068c56493d0f8b0296ab0b24e000000000000000000000000000000000000000000000000081536d273b88cc4