SigningKeyAdded (index_topic_1address account, uint8 keySlot, bytes32[2] key)
[topic 0]:0x1d84cb7fa5da6303adc54870a915cbf91d2cf642fcc5ce470b79b77467201876
0x00000000000000000000000000000000000000000000000000000000000000026272b0f6991e81bba1c40d851503fcb9e2866ee26114e516829c1e947f5c41c00aa625b276e2f2480a9797383d53f23fbe498db2341985bb02917870a864797a