{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0bf255a5fedb24526c6a89535a3fd3a6fa24b6860b467b58ad66726efe4ed976",
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    "signer": "0x9D254fE9Cc05F40F9FEC16307bB37dB69d469faE",
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  }
}