{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "568518925",
    "entityType": "User",
    "nonce": "0xce6b91606c574420d2c54de0abebe5c00497c085e17ebf80b6a15dd053cca490",
    "signature": "0x16adaa8626a0b493904058b15b5a0a5222c8a4d41722d2bf42ca53fe9e508fc264568d12221855ad788f5695b78e7f8d6c3cefcb6c3a7e2d8ece44c3a21c21161b",
    "signer": "0x571CC6D512D6f6fe43A3EDFE62123a52785d36fA",
    "userId": "388520"
  }
}