{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x186cd24ee3e5b656a915129be7e5d79dac3eb035eef7534f274e241767daa90d",
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    "signer": "0x1EEEf459C8e361773166d5681a5066659BC751D5",
    "userId": "210033902"
  }
}