{
  "manageEntity": {
    "action": "Save",
    "entityId": "388681",
    "entityType": "Track",
    "nonce": "0xbf097fea9b63b7d561004b46cbd14c7e8f53838cd4c4ebfbfe1be1572d551ad0",
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    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
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}