{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116691096",
    "entityType": "Track",
    "nonce": "0xf22297bdfe827b92226a4cd3a2e475a9b3cf9cda76319c20cb01e79afc6fd933",
    "signature": "0x7f9a87e1435372eb027118a2bef4d09ea5ea1a0d217a044d50b742c8e6a6ee2543ec11500771e0cc23523ba5df4ac3e5d9101544ed8b56fff595fcbe0cb385e01c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}