Extrinsic 159443-1

{
  "heartbeat": {
    "blockNumber": 159442,
    "sessionIndex": 2657,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x8a67e671b8de407e7aced1347b7f160ca2283384c7c7534d41d5fd620123920095c471134fd7866180267635c8e792a44595b7f0712874e8e7cad937d5d83f8b"
}