Extrinsic 40342-2

{
  "heartbeat": {
    "blockNumber": 40341,
    "sessionIndex": 672,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x36bf78531c315f7b9d8e9e774908b46f91f2b3df36080b63ceddcac8bf5bf02e74258037ecdb5eb51ba6111482fe57e1cbea115d1aaf460986fbfe8816621d8a"
}