Extrinsic 34728-1

{
  "heartbeat": {
    "blockNumber": 34727,
    "sessionIndex": 578,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x78c2d7d2bd477060bb0ed5b1a95001854e20c4ad3dc6da59e3dcb30825aecf205b19d305b60c8775eb584436247a1ce9fcb69a6bc9d810d4e5b7e0668f1b8589"
}