Extrinsic 36768-1

{
  "heartbeat": {
    "blockNumber": 36767,
    "sessionIndex": 612,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x9ccd66e10d851f428bbbbb34c776d75accc65e76e33fdef99a4e8b07b06628432419e20a1d42b5ccaa02c7a642667d9289b7350313e15ac3019c0744b24b4c8d"
}