{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645720561",
    "entityType": "User",
    "nonce": "0x3055dd00df0daf2fb1fbf96df170f4e06781407f656631b16a2bc24969b08da9",
    "signature": "0x9cbdfd91e1670fd4cb29cd1b64d698a2445b6e464faba6f89248213d8f1a731564956262e05e9f1395f6b4dba3db1341c415827b835777cd95fec902fad73b451c",
    "signer": "0x1762311451f81FD83EF02A8dAE43855C5ce1713B",
    "userId": "613326373"
  }
}