{
  "manageEntity": {
    "action": "Save",
    "entityId": "4357",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xff3db9cf6b70f6e77a0e0fa66ecb30e531cbd9fa474a0729fae7c54d8e9e71c8",
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}