{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x856f4989b0f8845e07b54f36e64a3edadae36c1cbfc43f54ab568cce28e48bed",
    "signature": "0x2f5e5baedfc87b0ad9b45be8e734d21664b7356b6b6a44213ee4f809785436a716a36e0ea4d2ab55864e42d2e3ce2a4f8e2de74142a15a8d733e9c96660d2a6f1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}