{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665",
    "entityType": "User",
    "nonce": "0xa3b6a19d61681d20b1c826bf1a1ca098202e699476668bb117bfe37417f87f1b",
    "signature": "0x148aa3282330ddca171a9a978247a7c1311ee4467afee521b1bdff7240dd1e94738e9256ae49a81be70862f3b978f2503e38603aa5d5f97de00bb9699baa522b1b",
    "signer": "0x5f002eD639b9263aAEdEE0aB936DE9F51c764878",
    "userId": "131017"
  }
}