{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd95f7a5966d582626a09b238b28ee83abdf33ee685a7cd6d31c8a994430fca88",
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    "signer": "0x1BC39B5ec2eB225E3196AbC357D3537c75Aaa206",
    "userId": "322235621"
  }
}