Extrinsic 9347-1

{
  "heartbeat": {
    "blockNumber": 9345,
    "sessionIndex": 155,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x4cdc9d6e67f14e19c8b989f419715ec44df3c8cbf2034acaf7228477dec5e95ce04100795bc8816f85238f37d0227a4c7d3865bc7d41509b0e408dcdf96ec685"
}