SigningKeyAdded (index_topic_1address account, uint8 keySlot, bytes32[2] key)
[topic 0]:0x1d84cb7fa5da6303adc54870a915cbf91d2cf642fcc5ce470b79b77467201876
0x00000000000000000000000000000000000000000000000000000000000000026ef4cfcd40f15a5f2841b14ceec75cc1a8a58fc15be3a06e5154a1b4800f7c4fc1613dc8fc5f65efe72f1b97168c7963011069dd1139ea2122a5fbfa6c6a95d0