Extrinsic 60747-1

{
  "heartbeat": {
    "blockNumber": 60746,
    "sessionIndex": 1012,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa6ec7510a6fac905212e4412aa067a5ec00025b5f77c5f5fa1e4d33f600b080599d55c7c1d5ef990eeefabf2fcf6a0ec7bf1693a24cb5a80de0039a43c233080"
}