{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6040d9b57bc939265a2e6a1f7b9dcd0880754e7f5623907ca1112e6c4dd505a2",
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    "signer": "0x5742B60db40171DF22Ad2Da3966d6993296BfCDd",
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  }
}