Extrinsic 42643-1

{
  "heartbeat": {
    "blockNumber": 42642,
    "sessionIndex": 710,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x369c6afc8cf6f56f1015060fd911f8020aaf651862c9d8d8a9231be0d7f72d461ddea15b9542f8fc7c633169ebf8fb67342ff0c50bc7902ee183b2bc921e8682"
}