SigningKeyAdded (index_topic_1address account, uint8 keySlot, bytes32[2] key)
[topic 0]:0x1d84cb7fa5da6303adc54870a915cbf91d2cf642fcc5ce470b79b77467201876
0x0000000000000000000000000000000000000000000000000000000000000000b54b60798ef89686be3b04a4f7cf97eb8fdf35ec98926c1f61b0391553f63232953862c264e4b49820d4a5aeecbab5acc7e69ad5ce9d20334c7c472f61db3673