{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x4773d6a93808313accf06f66ec2e0e972b0db9f03ebfda7d428d5c50f6b4f1b3",
    "signature": "0xb9b0e074c45f400881dbc6bd09110050384810d8bd1903c1ea4255a8a9c44609609c20176c53e8e0ce86879017de3913ffe6162b3ec7519c8c6cdc531c56dfbc1b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}