{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xaf8d1a107824ea0719f86fa8978b822fdd8715643b3cbac4841b682eb3febea5",
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    "signer": "0x667d286a481e16925e97AF3EeeDBA3ef47ebC1fb",
    "userId": "340727531"
  }
}