Extrinsic 41308-1

{
  "heartbeat": {
    "blockNumber": 41306,
    "sessionIndex": 688,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x14773b0e72c1f0dfa1c5571620bd9de63c19cf77a30c7e9769d3881bbe26aa6100a91c9e3f4254e319fccbf4325e6d03b6d969c03e309c9f9a81a2d391cef98a"
}