Delegate (index_topic_1address user, index_topic_2uint256 pid, uint256 amount)
[topic 0]:0x22fa5fbc94b06ceb9756514704b1812bbfce879977525eb7413d82bb507e611b
0x000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000a