{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9dbea9a20ddde6667ada8b4a3512ff086e72f9ac2273e8e045cac37c841c1a72",
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    "signer": "0x44c0BE17BF4A6fA12d1821a098CA33C7C9BF1cD1",
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  }
}