{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x38f8b85839a5513777d89e695555fc883a99d7a095578808f7eaeb3951e150a3",
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    "signer": "0xc5Fa09f5371cEfEBf004B331D3017dAe145f31c4",
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  }
}