Extrinsic 40342-1

{
  "heartbeat": {
    "blockNumber": 40340,
    "sessionIndex": 672,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x543df544e37056b53faeb17249bc19c96cd80c055efb491f14d91463223b194ad8a158d047fd7df9227e40a3eefc1951bb8bcaeb69c49dfb64953186825eb08a"
}