SigningKeyAdded (index_topic_1address account, uint8 keySlot, bytes32[2] key)
[topic 0]:0x1d84cb7fa5da6303adc54870a915cbf91d2cf642fcc5ce470b79b77467201876
0x00000000000000000000000000000000000000000000000000000000000000806ad199ad60de321f7d4be6d30d74abf6aa94d29b8ce079896005c5e1a488aa8cdca255efe5516d7fa1c165f86bc70d19ba1052d1756d897383dfe6182ae6e0f8