Extrinsic 63968-1

{
  "heartbeat": {
    "blockNumber": 63967,
    "sessionIndex": 1066,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x8899bd19047a07a34119db55da5131328d4279a6921ed190dc67827afe83a01798c70e1c85ea3f97d46a904ecdf6027ebdb99ad6c02b31ba923ef5f92bd21587"
}