{
  "manageEntity": {
    "action": "Save",
    "entityId": "1078688844",
    "entityType": "Track",
    "nonce": "0x7e50226c8f36f336e8211e361e62cd5269448dd3987db7f00ef7cddf02879cb1",
    "signature": "0x89eff8fd748e1de05ecfc5238e21e9931ca60f4fc90298943b8fca368802094330a22e4197ad63a7a9c27b6dba35c7f1fde66841f65d1756c27fc09ab52f34481c",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}