TokenExchange (index_topic_1address buyer, uint256 sold_id, uint256 tokens_sold, uint256 bought_id, uint256 tokens_bought)
[topic 0]:0xb2e76ae99761dc136e598d4a629bb347eccb9532a5f8bbd72e18467c3c34cc98
0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a688906bd8b000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000162bb9c2798ee1791c