Extrinsic 23973-1

{
  "heartbeat": {
    "blockNumber": 23972,
    "sessionIndex": 399,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xd611d4657dcfd0146f53e8617716b9915c75222b0522ccf7dd8a971465bf886fd175280923a284c37409f1b4d222a67267c2e037211e9661301104fab013ad80"
}