{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x960815f124b6d56b4eec74f9afeef717301080c7083a902de94990771a767ea1",
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    "signer": "0x6524Ae2fF85fFD135132d60c159b8679bb16b6E9",
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  }
}