Extrinsic 20534-1

{
  "heartbeat": {
    "blockNumber": 20532,
    "sessionIndex": 342,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x1826e2b69bc7fcf927eeac575792eb2072ea8ab46186eef7ae27ddd417c02907660e0afedf494ab8f4622aaff2f8236d5a47179d1bd1f3fb98de4ceb2cc57786"
}