{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x84fc13b8e3bc8bed9ac887021a76d37436cec914726df13e352b5bd4323a9596",
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    "signer": "0x2B4ff1F99494256104617a57fCa72bCEfbe8a961",
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  }
}