{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6768e732c77fe1f36e95eddde1a6c71fa3e8fd915f86f126640d87ce34c8f2b8",
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    "userId": "55290787"
  }
}