{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x520855377b7099a27f6a61bc73b983aebabd4b2ca072f4489e99555664415432",
    "signature": "0x80c44419cf2bc5849bf9408b227b9ef42fc6d2ab3026bfbabec5815be691a36313b0671bc78df7d47fba169140eadf6947aa1c8c394165c7f79aa99d3ed0ce871c",
    "signer": "0x887ff90b6e9a2F5c6Cf1E862028545C66FC95d72",
    "userId": "141224956"
  }
}