{
  "manageEntity": {
    "action": "Save",
    "entityId": "368632220",
    "entityType": "Track",
    "nonce": "0xcc2827537fd9225da7d0f65bab0b757120cc33bf1e1d65658c98ce9e90970c04",
    "signature": "0xbeca9e1421d642018a99140f6d3c66d740e495c82ca83ce38adf49bae6ac451a75802e89b882a89d483e1f6a247b8579f32486e6bcfb1c66a4a4e5f6b775af3f1b",
    "signer": "0xca797dA7dCB793742623d55EA81fb92A9566B550",
    "userId": "363062902"
  }
}