Extrinsic 43888-1

{
  "heartbeat": {
    "blockNumber": 43886,
    "sessionIndex": 731,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x1e87468da6b0bc6517c8ea7277fe739074979cf9191584930e749a4e164dd9323dd62a99b40510ca6d4349e7664f61ffee6214cc90e0bc1aa62619d6255dd88f"
}