{
  "manageEntity": {
    "action": "Save",
    "entityId": "1835545034",
    "entityType": "Track",
    "nonce": "0x9b024c933d19b8f3e7f488c7f97818cae2845e69ef6fb595dda4513aa9d1f995",
    "signature": "0xe79613502b36613f98149b1f6f7bde7c9dff11c433d4a02bebb60998c4669dd32a25fae035a960e56264894520be13aab43fd45d39bd31f74485391df01310b51b",
    "signer": "0x0D2c1331F52a98aF1Bd206E3C28062E717CA9E51",
    "userId": "597927803"
  }
}