Extrinsic 40279-1

{
  "heartbeat": {
    "blockNumber": 40277,
    "sessionIndex": 671,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x1a6941fd31599b29d317e92e7b882989422f6d49f748f13323ca2a3b6a3346218d7f6ac54f23ba49e53aa017ce40f38a5009b3a60d83bef10528ce30c3b66884"
}