{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xfe6f691ef6846355ad20d9ef99aa13806916d8949779cc6e783b5d041f8ad5d8",
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  }
}