{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x575c3d238119dbc05aafc9816a57d6032c11c555864394ecafd612773d7bcfbd",
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    "signer": "0x614Be948AC93c9908d944Ec68fc9EC45162c5fAF",
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  }
}