Extrinsic 40692-1

{
  "heartbeat": {
    "blockNumber": 40691,
    "sessionIndex": 678,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x14218519e91a5eb7a3d220c85da7754eeeedef1eaad046ea01ec81da6707012870341f5d8e654b484468faed92acc078cedf5da6158ca47b911e29e863e0448f"
}