{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8aacc82ed9270e9f2091d5a70bc998579ef20a04615e73e7c99498a4efe2248a",
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    "signer": "0x424b8Df5989875ef5215DFdB54730e493002E0Ae",
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  }
}