{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x662daf61a345474a77a944831357652d24f349b44b3d2a3c50d3db6215431895",
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    "signer": "0x6357f7Fd9495F9Da96b38682398cA12fFA4bf604",
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  }
}