Extrinsic 31109-1

{
  "heartbeat": {
    "blockNumber": 31108,
    "sessionIndex": 518,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xd6eaa243bb49fd508efe7821f430d0346329f0d972dadc78046f62ccb06fb437a7ac8b3790ed5e27e4d7a40f6dd66846d42bae1d74fc8796350997c2da7db28c"
}