{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x05fd57a103fbcd88440b51142b417cda834e10655e443822031f6dad90019325",
    "signature": "0x20a7f0ecd79ed89893656225a97e21467f2d1679ff84c8e13ebc05c8ba71743d22e207a357c500721dde231347cc88dcbe5f2e20c100ff4c332085fd08948c731c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}