{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "326961",
    "entityType": "User",
    "nonce": "0x18ae89bd8245c679cd5a15f6aa40be978ad2354ac53fead04ab6f5dfb7e5ac4f",
    "signature": "0x0c715aebaf2c7da3c605b65ea6c8b521c4b4a83008fa0f1b3fc9ad68650201251c96c8f6168e78a96b57057314567bcf82a184004b3f24006af8b038225f628e1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}