{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa21acbc350f0d0ff425706be6f3a7d1ab5adcc2edf3abf477000b9a908f9b8fb",
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  }
}