{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xaffc3600faa6ae4123aa7cc679af97039e2310b8cba96a89f613dc2cfb45d485",
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    "signer": "0x5fFf561f49180ddDc64C036f9F45ae3910D35c54",
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  }
}