{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x841c20f273520ff3590e4f4553b28246fb011dceb7b64403f2ed8fcc97cd9f63",
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    "signer": "0xA5E9de07041a020F8aCC648d53FC5286b51E9C9B",
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}