Extrinsic 40398-1

{
  "heartbeat": {
    "blockNumber": 40396,
    "sessionIndex": 673,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xae90453a45737bb87b91dbae779cdc9746a42b9299c72bf23aad705bde51843a0126bde16c9b4527238db69ca88306d73449693ae02282b386a94cedfabb918f"
}