{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103704",
    "entityType": "User",
    "nonce": "0x2f9ff23421e9b32408d81666b6ea076fe787f5d74fcd59b9205a32779b84f0a9",
    "signature": "0x2ad8f680dc84efc2345cd584774adc99d453b1bbfd6264fdbc40b1d444957a456e3292f019f50cc443f143e0725c2ee457d6500940b6a5f7e9bcddfdc603c1d01b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}