{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44039",
    "entityType": "User",
    "nonce": "0x1a21a88bf4eb224cf23c43d9c035c396423500faaffd7b767b41242b192c1850",
    "signature": "0x4cf1f921b2dba060441472d19b0c691b1b93496fc1a14cdff3649d9d91da16370f57ce7d83586b71e53b6b9e21b59a5851538d082c2a2f7950ed61b2897dc0051b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}