{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1650b72755a1d9b4802f96ff9721c9dae9e9c3b4dd8f0e46a7c3377008111f8d",
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  }
}