{
  "manageEntity": {
    "action": "Save",
    "entityId": "1686754501",
    "entityType": "Track",
    "nonce": "0x0d31a189dff693febfd9bd17e27d343e94712c4db8af9c573b9353799e77f97f",
    "signature": "0x92a6673a6ab0ecbb558e05725473f6cdbe2e47e233dd670cb9d4a57c2d578e1e2f455189a0c35782da8b5f4451b0392cffcd92852502a8f48195460713b5e5791c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}