{
  "manageEntity": {
    "action": "Save",
    "entityId": "334647059",
    "entityType": "Track",
    "nonce": "0xcb08071477110709043f554df8f926f253d561569c072425d67a970f796f02b8",
    "signature": "0x338e09d8765d93e1d766416d3bf3bced126afbcf20433349cad502fe2d3146e520fe145fc64024144d5aca75747f6556122635d1332072ae2cba45d5124192f11c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}