{
  "manageEntity": {
    "action": "Save",
    "entityId": "324365",
    "entityType": "Track",
    "nonce": "0x293ca0660e449dd4b8c4fc8bc64c7c715bc2605fbc6b6291706ebc253ad00940",
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    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
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}