{
  "manageEntity": {
    "action": "Save",
    "entityId": "1144147919",
    "entityType": "Track",
    "nonce": "1777431184861914702",
    "signature": "0xafc0a7255878f012847210e6464e4d01628a5f8cd6be2566fbae1e0a071e7e40415c9be4d9cd7c1259adcb4f3e85135b41e0ab72d009aa05d31a43903f388adf1c",
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}