{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x021a4e89cf940881b527da539575f703f6a621d3a359ac520313f7c9f61dbe35",
    "signature": "0x8f278341e1a4e50f3fe8a15a487807fd47e56ec86cab646399c28eb47c35ab3967b35fa96c2997a00da9726fe5172826fb04e0d005e64bd2a3832b1eaa2f5c9c1b",
    "signer": "0x027B668339330389114813962e0335e3c867e0c5",
    "userId": "353214533"
  }
}