Extrinsic 31820-1

{
  "heartbeat": {
    "blockNumber": 31819,
    "sessionIndex": 530,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xc2b755a8007d4b9eeaac57ce1b5907728c92d797b1840fc34a25310027bfc26ce2a858c9625321876cf22e40be833f362ad8d88e43cc4aa49f429001ad3c5b8f"
}