{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x912a195420eda4d1bbe347d102d1948b90e37b51ccdd9fcf8261e59d911af67b",
    "signature": "0x3dda32a8f4a6473907c3acc6237b9202fb6732cbfb53068d6b1fd07d59bca3343e08db519e087480fab734114104e9a307490f0f245857eee71d5e2491534bf11c",
    "signer": "0xc75b2F94526730197DdFe44FADaEd9AbA490032A",
    "userId": "229850481"
  }
}