{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x46454945079c6bc4cdf06257892649d7e9e8d40a26ff426f8a36f52be47b8adf",
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    "signer": "0xf3fea3B2be79E54d1BbCEb82df8F82420871A615",
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}