Extrinsic 31166-1

{
  "heartbeat": {
    "blockNumber": 31164,
    "sessionIndex": 519,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x9c6367d74f19e2eb94cc8e0d58e54552359a9edcdb15bf0403c2e725d4c10550895deca569c632368138e9e1ac115d1211a2e76886ab60c05d076c83d3bd1380"
}