{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x83753a51f5023b66444dc82aeb827a8a1768030fd3f1fa4150f657ec09689896",
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    "signer": "0x03BB894E7BF8807c3280FF09490241E9e1Ab2e56",
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  }
}