{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8fa6dceeca837ea4d1f20960b37ad9848506d877648cad2cd3f0507d0389c448",
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    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
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  }
}