Extrinsic 34359-1

{
  "heartbeat": {
    "blockNumber": 34357,
    "sessionIndex": 572,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x74529e6914a2cd1bd63680d7822bd35218b8915e9aa77a8e5ac7a7ce3c27b8421518ea3ab3ed19b4eee0cc2dd7a4a434bed5c48a3919ce46b055db5c8996a484"
}