{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcf9c838efdb94d7361d7c3c1e989b5835b717639508f3f147da74fd5764779fd",
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    "signer": "0x56ac05cA9d5372f1DB27f905cA88528d65C804B6",
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  }
}