Extrinsic 27967-1

{
  "heartbeat": {
    "blockNumber": 27966,
    "sessionIndex": 466,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xac141498167c5237ef3ba312ef1ec9c403887431420d4e84e97a28a3b6187371eaf243e1192b560251866f9fb6fb385cc16f4287b307b0df7ad446ab01644a89"
}