{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0xa42353661e3e74cd5a0901acbe0fbcbb2b756e25bb4aadbc2b40041516ed199c",
    "signature": "0xf89b980f270f63b997b1ae02808c1a34f7537ab7b089eb841ff2b64ed9c84a30722cfd7c27c96d0f93d26ca4b106fa176d294a4f6c435446a093645a57936c5c1b",
    "signer": "0x4a4E686a6442e2Fc2495a7d4363B25c583Ea3c3a",
    "userId": "34815"
  }
}