Extrinsic 31334-1

{
  "heartbeat": {
    "blockNumber": 31332,
    "sessionIndex": 522,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x7cfffe9366c1c93cbb17c72761f5f4ee40f3b53d6764584e8b1835899e871c3b6529673b40d102ff089ca626dfe5986d48e10414e31086b09a81a69c50887a82"
}