{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4338",
    "entityType": "User",
    "nonce": "0x6280c9c889f36e1638feb592a67bcab1d8fa3c864b11febd8947e579ffa731c3",
    "signature": "0xafc44b5f0a27b9b9b1d8eded99d7986b54d2b98aca4220919d1a356cb6817e46057d0228fb98fbc47b05367ac16bb9015973400765ad5fde106b6a760226b6fb1c",
    "signer": "0x33c702d534707f8Cada5DdD521C5900827973f1D",
    "userId": "5642"
  }
}