{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "227991193",
    "entityType": "User",
    "nonce": "0xa773ef591db734d2e956f2249e6c225ed6faff80a41cc69699f9b29ef6a17567",
    "signature": "0xe574913ce8beb769e7e4e5f3e9c4b9b19ffcbca36eb8d1a17d4701ff94f8fbef165d8a636a3bf28223581e1ec3df575c862c81237785a4305bacd6dbce9912641b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}