Extrinsic 39817-1

{
  "heartbeat": {
    "blockNumber": 39815,
    "sessionIndex": 663,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x248b651f64136c1c083e10323994d1fcdf2c6f42f1db6b45c05524ea874b5d5730ceca9e1b3eb1811d56b2bc587bde1e21d66f8402c9b580ec716b1fb5f41b83"
}