{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4",
    "entityType": "User",
    "nonce": "0x507460581d876d9333d8389efccd35aeb34534b9effb9d72db59b204d56ea73e",
    "signature": "0xa251c10f811b69fbeb11c478aa8f62fa2e8331bcfb819afd2fda47da881fd707766bc598b3933ce6c1a44cb1e69782ab388c10b85a12d88b89d80f9cfc3f25d41c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}