{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1d2fd6368cdeab34b209ba05e0bb0856568312823a9e251f0a57ea877715b779",
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    "signer": "0x3864F0ab89ebC78F1b2edE5d22B8B038Aa3E9bc5",
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  }
}