{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4b84508ae8c7631a1a1f5b45a68b8a329c37e3db33c5910d866adf0e2e58c909",
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}