Extrinsic 5970-1

{
  "heartbeat": {
    "blockNumber": 5969,
    "sessionIndex": 99,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xd2fae50d842fe0ed02282964ac42d3b2565740040891ce9b34c6bc59e3556666df989527312bc2f71a7cdeb5fa8e1768e889cc0a96ad91b14ab560f7fac1c587"
}