{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1d23d84787bcfbf5a827793ed701f64da2056d43867a53e131c963424455aeb3",
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    "signer": "0x5A4a438EB48E0567283E8B2Fcb511DE3cD0Da231",
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  }
}