{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6a03365ed70fd2c33815080fd5066e3aafae00c66211ad7842f36f1c5834d87a",
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    "signer": "0x7368b27A35b882fb257Abd3bf03456cC0CA7B14C",
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  }
}