{
  "manageEntity": {
    "action": "Download",
    "entityId": "209887322",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"city\":\"Bangkok\",\"region\":\"Bangkok\",\"country\":\"Thailand\"}}",
    "nonce": "0x4e72ec7a0cf0b3b4243d7922cc400c67c72a69e1110e3433d21d31cd86d1570c",
    "signature": "0xc9066816eb9b8eaa081b1f57d458f46fe023869e035ba981e5ee88ba125d4ae45cd7e9db42f10ef287b45a339fe2486a8780d4c8842fb764254add94ccf9a3a31b",
    "signer": "0xE51EF0CDBB6Be04222D902916F2b0f67DBAb6616",
    "userId": "1334982"
  }
}