Extrinsic 12682-2

{
  "heartbeat": {
    "blockNumber": 12680,
    "sessionIndex": 211,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x12c1b524aa3385e2e89fad7de0dbc70c1196ed8341fc2f40d2e2625e2adfc73aaded4cd8168bfcd391347c9eb4dd385d20db62f083ae05a3c7b7281db8b40a89"
}