{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x12ab18770bed8f7658dbeb74c82e43aec05871e108855e226ca0fe42eb66d6b1",
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    "userId": "858465138"
  }
}