{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfdc208317362a8c50c56e9e0e5e5e24af827fd9e2d52be0386fc031cb3656a36",
    "signature": "0x9f8b69b0a759a1479cc0e979197d99b325190d5eb9ba222bba9f473b09c0e86d79c1cc8cbcdcd228d1b1541ffc8c195b12a8a251bb466859b8a96e9aaa35b6861b",
    "signer": "0xE319b8e64EFa56bAC1ce42cb8A54D8B3ac1fe34B",
    "userId": "130115435"
  }
}