{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354640",
    "entityType": "User",
    "nonce": "0x36ac822a13d0e1c052ca95005aa4934ecb5e4142cd626f0e57ca9d7fa407ed5a",
    "signature": "0xa2a397ae212026f3c032890947382c022e9ade1fa7609472b1a487d2a9f040805de096b72152d31f75b45a86c1c78f02c29bc4b8b5ef7b54a05a844a67799f5e1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}