{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x97f760fb30c2ab20c0f2c18236d625e67726d0d98964d312352c694501e832db",
    "signature": "0x580ed2ea9dabd33759be7705f166309f95c327001fa098043f0ecbbe8b65bbc12f9ec4b7e97a659439ae1080ecaa0866827753086eac2c81b0db1dd6b20d812f1c",
    "signer": "0xAd3852b57Ce1853b5633884cCEb6bCF48AB644Be",
    "userId": "608902598"
  }
}