Extrinsic 27271-1

{
  "heartbeat": {
    "blockNumber": 27269,
    "sessionIndex": 454,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x2a00571746d52298048231a8b29e702711874b8c79ac96d2d1fccd4abeb6083a44e6d58b616ac438fea24aa687f43b6daf33952bceea16c4a474fd089d0a878f"
}