Extrinsic 43453-1

{
  "heartbeat": {
    "blockNumber": 43451,
    "sessionIndex": 724,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xce2851c11d89c52526251e4fe02888ac06ec1e80a9f5ed3fc81ea661fe7eea463ad608b738a0003776a28be5a93d5cdc56345ac0325b1c7120e0aacc6e18ee8d"
}