{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x02ed21c0b347a968e6c08040186f70f6972b36d0edde7dd143f21083f5bcae1a",
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    "signer": "0x5a81BccDd6D352c2ee8F60f6C731E4125465471f",
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  }
}