{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x26df3a235b161650c2282f70c574ddc6b20fd37248c38ca08e94d41887266799",
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    "signer": "0x7B499405130cFEFBBaec9980A9E37BBE42E8589D",
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  }
}