{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1688916",
    "entityType": "User",
    "nonce": "0x01bb06fd617685c7334bd2d052ff854b8e1c3f9f6de4889367e379c1073c26ff",
    "signature": "0x49342c4e3884ba7df18bed9b49749838e9dec513db50d234f4ca3660954e00f35ca24fca3989c5698d37e597d541b5090574b77200598c3782bb511f8c4edb0e1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}