Extrinsic 143408-1

{
  "heartbeat": {
    "blockNumber": 143407,
    "sessionIndex": 2390,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xdcc72bd7ffea411e30a9f20a70e2962aa5fbbadfdeb3eb8a8b136e94cb352a78291a7072d678774dca5c9553f5efc8110caf498c5d9bb128d1be9656fba9c38d"
}