{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa882acf557b4b3b10f9a3563c312bd29a9775c5af18cd6363503ea45c1f00133",
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    "signer": "0x5Af531A9cDF9747df40f57531227d70F1bdD2ed7",
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  }
}