{
  "manageEntity": {
    "action": "Update",
    "entityId": "1899765958",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_contents\":[{\"timestamp\":1781344278,\"track_id\":325152},{\"timestamp\":1781344278,\"track_id\":181055},{\"timestamp\":1781344278,\"track_id\":219363},{\"timestamp\":1781344278,\"track_id\":50638}]}}",
    "nonce": "1781344278196159080",
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}