{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0990661600c18851aac2dc652d6d1dfe3587ee737464dc688bc4e088ab9c80ce",
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    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
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  }
}