{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283535234",
    "entityType": "User",
    "nonce": "0xa4147bdc0c4b48f11b316950d508fa361ab3b3941758d89637b53ed2bb10f540",
    "signature": "0xb9314c64c634d0fe858579986219120207c8e9a617fc92d32ce2e705b4ec52530b6456a14f0f851062bfeb5c8e110b2a31133193265eaf1108df666798fbb5021c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}