BuyRecord (address userAddress, uint256 id, uint256 amount, uint256 quantity, uint256 timestamp)
[topic 0]:0x518aba03fbcee4139f9f7c77a46b89a08fe15e834b6ec8d855a9d4cb86453b8b
0x000000000000000000000000ec3280649d99a0ab91b75fe10db46348b79a0dec000000000000000000000000000000000000000000000000000000000000006700000000000000000000000000000000000000000000000000000000000003e800000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000067595274