Extrinsic 17788-1

{
  "heartbeat": {
    "blockNumber": 17786,
    "sessionIndex": 296,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x02199eb11d55d73bddbd6595f01d37f58c65869ba20d3e3c72356a3f0b84b12487ff91ca934174aaa11cd40c78c19a4f4e2efe6323c8d2b0cfa4b0ffde39ef89"
}