BoughtTokens (address sellToken, address buyToken, uint256 boughtAmount)
[topic 0]:0x6dfe06ca5961b140f839316b505392ab4a18727b308bfb7d9275f8ed1cc99f04
0x000000000000000000000000b31f66aa3c1e785363f0875a1b74e27b85fd66c7000000000000000000000000b97ef9ef8734c71904d8002f8b6bc66dd9c48a6e00000000000000000000000000000000000000000000000000000000001985f0