Extrinsic 57585-1

{
  "heartbeat": {
    "blockNumber": 57583,
    "sessionIndex": 959,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x04ead4f8ea24fbd9d810fa8bfbe6bd1117904e44237ab7dc2df87495279ec705c22eb489f168b01bf8ec77600bda6a24dc9a0ea6f8be6e712ac96512f1bf4d84"
}