AuthorizedContractUpdated (address _contract, bool _authorized)
[topic 0]:0x8f689f580b739f90591fbd591709dd98941c0afe7a47c812b93e978c4702bceb
0x0000000000000000000000008f4d3fd0a6de72ab24fc6f62eeb7b8ec96c2c80f0000000000000000000000000000000000000000000000000000000000000001