TermsOfUseSigned (index_topic_1address account, index_topic_2bytes32 termsOfUseHash, uint256 timestamp, string message)
[topic 0]:0x7306aaad95e4cedaf66590264690769ab635dfbb1535b86240b91862e3de48e1
[topic 2]:0x21f8c960bca5b09a08faf4dbeeff5374d92dcf0573713ea11382ee4c087caef3