{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xec335a6fdd92ef65ddd566ba549485153460d9efeb89a07c1fdc4afacbcefb45",
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    "signer": "0x6e2CEb8Cd4f0A669607De6c8686f7B2E15dEaed4",
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  }
}