{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1b34880a06aece56e310ed191f5309025ad263aaa96545d8d90205e1486c9296",
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    "signer": "0x7B499405130cFEFBBaec9980A9E37BBE42E8589D",
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  }
}