Extrinsic 18936-1

{
  "heartbeat": {
    "blockNumber": 18934,
    "sessionIndex": 315,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xfc83ca6dd577deffb11adff0c0c806a99f0575d0e47618a7c4808c1cfd1fb06b132b7b7a79321d9fd40c8ba21e650279d2e33ab3a53e0a4dd81b99d2165e948a"
}