Extrinsic 34712-1

{
  "heartbeat": {
    "blockNumber": 34710,
    "sessionIndex": 578,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x7ce25f8b9e39a78d3cb6404a112b78b61d7169d0e10b422d7b846a421b98921ed765b8d95e3213230ceec9bda3d063855d16cce7d80ae7eebb388ff25f1afb85"
}