Extrinsic 9522-1

{
  "heartbeat": {
    "blockNumber": 9520,
    "sessionIndex": 158,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x2a3de50e73db98669f76db173dd7988018c98e29450a78a3ea48cad8a011ee7a82bd6fd88846e5b0a818530ea09b540b38ec43d838bf5e57d540ed10b3891a8f"
}