Extrinsic 31906-1

{
  "heartbeat": {
    "blockNumber": 31904,
    "sessionIndex": 531,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x985b354cad7a401c98daa1a5cb85c8965501ffac3b541a26fcf973f54290be11257f54b89fafa560b49a2bb4dd0974c36758e4a495799d423cc9d16e2e206e8a"
}