{
  "manageEntity": {
    "action": "Download",
    "entityId": "227662",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"city\":\"Mandalay\",\"region\":\"Mandalay Region\",\"country\":\"Myanmar\"}}",
    "nonce": "0x57b4176d6cef4b243935af9015d007b02f00d35446ccc0995d6598f15bfb4d5d",
    "signature": "0x478416145b919ccc8dba7b77e1e74f26dfdc407b4c14883f1e843c8908e639ad38bcd88c3ebfdf4d845bdbc3378c2497e9fc25f913d30ebc02be29cb33fab0fc1b",
    "signer": "0xFEa2c41d314209186e519b7539c0FcBDa1F9f00C",
    "userId": "51657002"
  }
}