Extrinsic 178997-1

{
  "heartbeat": {
    "blockNumber": 178996,
    "sessionIndex": 2983,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xb20e9074bb0976022603cb688c7dfbacb44171bec96eb24331c30a67415a560b11a583f82bc91d31c65745b865abd22bfa762ea623713d1662dccd55e70bf389"
}