{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "365943",
    "entityType": "User",
    "nonce": "0x1fe70eada05c9ba359002e24a36fa62d8bc334c5ac9d01351c6988d36ca93c6c",
    "signature": "0x545344fd09a663ebc4fa3c822b13ef8d5ffefc9a08d3cfeeb79d012e357f89da0006f5a6a61e2d2cd2930fdf3c825947c876f7a90a8fab43c0568384408dc60e1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}