{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334539",
    "entityType": "User",
    "nonce": "0x375f8084ad472b63591f13bcb856452c0f4b058ee94e09210dd14b085eaead5b",
    "signature": "0xc24f838666c574467059b2f823a943dda0e3d0868a361e4472e2b2f87c47dba751170d1ffc439eff3f9e6e322436a3fb7e7ecca13e250f932e436c3bcb44fcf31c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}