Buy (address user, uint256 amount, uint256 price)
[topic 0]:0x1cbc5ab135991bd2b6a4b034a04aa2aa086dac1371cb9b16b8b5e2ed6b036bed
0x00000000000000000000000062f354d79caf90ab72ab05f037400ddec2f4668e0000000000000000000000000000000000000000000002197063696076a800000000000000000000000000000000000000000000000000000000000113b1318e