Extrinsic 17831-1

{
  "heartbeat": {
    "blockNumber": 17830,
    "sessionIndex": 297,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x6a901a8ba80bf1787ceb3df85363f31b3fd69ea4ea863ace9e2e1589209ce556286bb6c01385c67165b8989b3f0545c81a3758e9510e13b3b85a9d44968d5283"
}