Extrinsic 23261-1

{
  "heartbeat": {
    "blockNumber": 23259,
    "sessionIndex": 387,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x90d426a4b5cdcbf097c6f9b6eb1b4f5e91d3ac147edaf3dcd4ebd10a9e62e4013772a19e1578b9061a77e1345ae7e1362f28ce50e79805b79d4128bb6a152b8a"
}