SigningKeyAdded (index_topic_1address account, uint8 keySlot, bytes32[2] key)
[topic 0]:0x1d84cb7fa5da6303adc54870a915cbf91d2cf642fcc5ce470b79b77467201876
0x00000000000000000000000000000000000000000000000000000000000000017e1aa7ad78413d4afc6aa7ed32d1ddd342baaf6a10c96d6b7c3e24c205f2ddb2a17e75ba0b035ee30f239f2f82a9cf1e7afad8dbcec0d3b979f596bcc9d16959