{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280503",
    "entityType": "User",
    "nonce": "0x398ecd8f897f3c71d352b5f60428900c285f8f249deddd464c5606e335763021",
    "signature": "0xafeea11cce7e64c5763d4184339e1b30bc672221829199a3990a3ab103d5dead0378529fe87b1b8c058da0a74a5f3e789712ccd2224dd279f2ad2e889b8771301b",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}