Extrinsic 31188-1

{
  "heartbeat": {
    "blockNumber": 31187,
    "sessionIndex": 519,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x8ad98d0803ab3e80c3bbc9176b7f492229fb7ff7af06aca9f181b6083ac39c78a16f942b800e036cca73b6e6b0c1e889fd4f1d246c5eef6804e73395d994958e"
}