PurchaseEvent (uint256 , address , uint256 )
[topic 0]:0xbec109f7ee137de661c6887caa96653c0545050a9908a3b6eb5190440bbec864
[topic 1]:0x000000000000000000000000b179ae0f859abb4433c8f0fd3514318ea7c0c520
0x000000000000000000000000000000000000000000000000f9cc34ec40f8c0000000000000000000000000000000000000000000000000000000000060390f0c