Extrinsic 34405-1

{
  "heartbeat": {
    "blockNumber": 34403,
    "sessionIndex": 573,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xbcf4e3048e4d207393c51536ee7b0147f702a03432d2a9c6ce3308fa337cf60c5cfc59b8e3f318d01f34734c6c769562e90362ba24fed6cd7f19cd904199df8e"
}