{
  "manageEntity": {
    "action": "Save",
    "entityId": "170059",
    "entityType": "Track",
    "nonce": "0xa8ebf01719efe59b76b8b34d0756c5798227ba6a933f2a4437d6abfb724fb9e6",
    "signature": "0x4ebc6f78e4a46a82249192323663c6c032101b50aa301b5ec21eb06363a2099b3ef6b9280ad2b6380f5a209e65098cced6acf9dcd35ac2f0ab59ecb3e357fb1c1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}