{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xd433404ac9b3cc30be9172c99bb3372bb148c1bf58d817a21502abbcdde78926",
    "signature": "0x5884cf16aa7df586fa9ecbef12229c311eb86a2b1e8c9530ea00edeb275da09e2944dfca0ae8f4d2b5d2bcdba1e44f8b742821786aa9b1e46a49a5a30c9ca9171c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}