Extrinsic 175716-1

{
  "heartbeat": {
    "blockNumber": 175714,
    "sessionIndex": 2928,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x30aa8fba970a50c0006f2e95c01f4b2f6c434a700bdc8cfc1944b5270d4a877f560c13f304ba1b582c2bfa39cddc9fcb9a1cc1ed42267fd21dc32456ca0ea880"
}