{
  "manageEntity": {
    "action": "Save",
    "entityId": "508417624",
    "entityType": "Track",
    "nonce": "0xe1b44050bb69b10b3790a68b0c7c394335dc5ed486cd72d199aae20799202b50",
    "signature": "0xfb453bf9f3172165611ecab7300a4f41a8d9ac6438b1afe89fb1416b67847a91666a9b6dfcc917ae8195d43d2ae0b15ee51f30317c99f3ddf4a009df36d250db1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}