{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645720561",
    "entityType": "User",
    "nonce": "0x995f48b4d375bab493797728b4795def94c84c4cc83be56d6c69098e60721e10",
    "signature": "0xaf142620aec049c53c6e1abecf6cf4fed38d7ae1021ce17b295da7cfa05f06bb09f50decd088d0de20a96e70917a76e1d415aa307afa48ffabf64d095cf9fd351c",
    "signer": "0x6Af6D40d1d0B48D79D2bd3E3c8f0a45540130c0F",
    "userId": "89433"
  }
}