Extrinsic 55845-1

{
  "heartbeat": {
    "blockNumber": 55844,
    "sessionIndex": 930,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xfc306b129ee256bfcae189089429ddaa74ac85ee41e62766d7dade5aee6bdc45f8e55f0dc51e4c53c0986159733218472a6bdee0331cee966e78495202adc083"
}