Extrinsic 2384-1

{
  "heartbeat": {
    "blockNumber": 2383,
    "sessionIndex": 39,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x96a53d5d306c6002c200cfbf8e0ebaa1a30efe9cadc8a20156d6a1ff34595c496b61d26f6662919d3c839a75071bd931ae1182f6dd70c8c9bb2ce23c25142284"
}