SigningKeyAdded (index_topic_1address account, uint8 keySlot, bytes32[2] key)
[topic 0]:0x1d84cb7fa5da6303adc54870a915cbf91d2cf642fcc5ce470b79b77467201876
0x0000000000000000000000000000000000000000000000000000000000000001b3132f7ce2e3618056ea943efdd98e80208eaa882a98a4162dfde7a9c4b64162c65bc9843cd373f88ef00fb07ff533ca4d55d1381644363e058cbdde23265fe5