{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9ca5ed75abed618cb3494eb4e3732fd4e0013a10acb619720583a0c8c91815ff",
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}