{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "961722239",
    "entityType": "User",
    "nonce": "0x958b0aa5df6bfd21da98144573f4f60c0f952b7c4d9f8f5e9d923e21fa9fd1b9",
    "signature": "0x30fc2aa7f9b670a129c959e4a51f6dda42e61d24a40f152ccdf066cfded4039b32e46f6d6675e6c4d27fcff5c43f5ea96d74e317dc7698968ae7ab7aac5f97731c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}