Extrinsic 77207-1

{
  "heartbeat": {
    "blockNumber": 77206,
    "sessionIndex": 1286,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xe4d1ebc1f46b9ecb0850e6d02f61f5fb96fd3b62b621e861ad0e65c644a12a34848cc92f85a4f9b68eadd90a62de9b97746d90581efd693d34e941c9732a978a"
}