curl --request GET \
  --url https://api.example.com/api/v1/brands/{brand_id}/dashboards/competitor-google-ads/spend \
  --header 'Authorization: Bearer <token>'

{
  "series": [
    {
      "competitor_domain": "<string>",
      "points": [
        {
          "captured_at": "2023-11-07T05:31:56Z",
          "est_monthly_spend_usd": 123
        }
      ]
    }
  ],
  "estimate_notice": "Estimated — modelled from competitor paid keywords (DataForSEO). Not actual competitor spend."
}