Extrinsic 31464-1

{
  "heartbeat": {
    "blockNumber": 31462,
    "sessionIndex": 524,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x7c301b8e69494822a9b0dddcbc70666ea1897b2cccfb0d02fb425c29620c795a493d48845e05eb6a5f0fc19035ea33b6f841026bef69d70350c2bb69810c2e8a"
}