{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0xc843a6fc6aeae6298927af7b214586a55f628a5ece9fa85749fb7d002a30fa59",
    "signature": "0x2b449d60cf0de0ee086f866d81f0a0271b5f612032b5c0f3de585b923ef50f0e4afeac3bd56aff269832e3575b64dd186192a2cdd804e13ce3bccadae5fa6b681b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}