{
  "manageEntity": {
    "action": "Save",
    "entityId": "119323518",
    "entityType": "Track",
    "nonce": "0x92c8b3be91f7eaae0c8c079cca59f64e5f7c164c9d7ac42bee1f2ac3c227fa22",
    "signature": "0x92f286752cb214fe640bd80433b982aad12b767658afb694caadb2ece6c8211a2410e8d309db7f8595dfb20981746a7c5bb7df0fe70c8dbce74c36662e0c69761b",
    "signer": "0x48a006fC89FEf065AAB7A5769519625870833CC6",
    "userId": "128172"
  }
}