Extrinsic 48734-1

{
  "heartbeat": {
    "blockNumber": 48733,
    "sessionIndex": 812,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xac2a12c222cba87e10b4235439473184d1c64606e6faeee0896104c563009036400601b6c23a20b47c16d74acc8aa747207a583303212e138ca6f2b98ec61985"
}