{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329513359",
    "entityType": "User",
    "nonce": "0x644619bbdf8d9b584bb3b5fd764f5313b2188b4b198b4fc7799d71a02e7279b1",
    "signature": "0xdcabd4adb8b783284ca8bdff3da30d1f00b80fb087e1c50fb84294dcfadc91224198260855ae8d094c692283d0c23ff6746db7399a97f1fd62791dcd7c2efcb91b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}