Extrinsic 19843-1

{
  "heartbeat": {
    "blockNumber": 19841,
    "sessionIndex": 330,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xd4b3daa982295bd560d3068a21b7d1ab49aa064dc86b6a3d8b48ebf35e29b561be6358ac2f072c866822e0a811aa326671196fdc25f964936c4cb9d9f845c182"
}