{
  "manageEntity": {
    "action": "Save",
    "entityId": "39848",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x895aaf8d6660d4403f200a635f39df691db7eae74b8a43e486655cd533c34190",
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    "signer": "0x72dD6E54C1904BDCf2b8a654d8CD35Ba1CeE11F8",
    "userId": "211770148"
  }
}