Bought (index_topic_1address fromAsset, index_topic_2address toAsset, uint256 amountSold, uint256 receivedAmount)
[topic 0]:0xbf77fd13a39d14dc0da779342c14105c38d9a5d0c60f2caa22f5fd1d5525416d
0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004fe