Extrinsic 174585-1

{
  "heartbeat": {
    "blockNumber": 174584,
    "sessionIndex": 2909,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xa463efb1f7ccbbf0ebe83c9d6a0618d95f29a7852b94787aaebd2d7487cbdf28aa263b1cb11e1505203ebe9c542684dd1a9c7361f06d2edc131380e8c80d2481"
}