{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8ea908501660a72601459d0a888350af9f076fa095ea01d01d2f75592f9568fb",
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    "signer": "0x4EFab23E68efB7e12906e915F64386b250B4EAd4",
    "userId": "799793973"
  }
}