Extrinsic 43428-1

{
  "heartbeat": {
    "blockNumber": 43427,
    "sessionIndex": 723,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x087e2452dd4cfdd29cd36049a6f8d1c51a4ec70396459d265a4d98d3e3e47230cc59b8417e4e59266d42fd8e752643d10c77481c07e8cce338c30cec05666883"
}