{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2749",
    "entityType": "User",
    "nonce": "0x4fd99770c224f856e24903dd0ea4361d3d23a5383885255c8ed1239dec49cd1d",
    "signature": "0x7277319b3a7e2bc3b42b4ae4347aa59e4837974a07afffb1730662b99e76844c0fe6c6f5b2bdef54f68571422f7d73afaac9d7affca5cf3cee81a7f6014670c71b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}