{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd0b8bb82cba96f395ef6e113177d70b3f1cee8af3022a734adaacf4f1f9848a0",
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    "signer": "0x9433D425e40bbE9860967f260A51Bd24E44797c2",
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  }
}