PurchaseEvent (uint256 , address , uint256 )
[topic 0]:0xbec109f7ee137de661c6887caa96653c0545050a9908a3b6eb5190440bbec864
[topic 1]:0x000000000000000000000000e45a92024377cbe3e30f7d6815ade31941404d08
0x000000000000000000000000000000000000000000000005f232eac3830c600000000000000000000000000000000000000000000000000000000000608ab323