{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5b7866750a9db6866709c2fc8a9c6010ee9fe7c5c32ad81234853162b643fc40",
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    "signer": "0xC8E98439cD764aDe3cff6B018a4Dce2806a3a464",
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}