Extrinsic 174701-1

{
  "heartbeat": {
    "blockNumber": 174699,
    "sessionIndex": 2911,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xb6c5e303f35f5b523d17bc1963f8df1740a21a0642b82ed392f2c4fa986d1c7d9625362294a43d82d17a47314e26e5cb4bd982f338a5a6ef1ffaa11265629c8b"
}