curl --request GET \
  --url https://api.pocketflows.com/facebook_ads_campaigns/{id}/conversion_attributions \
  --header 'Authorization: Basic <encoded-value>'

{
  "conversion_attributions": [
    {
      "id": "<string>",
      "amount": 123,
      "currency": "<string>",
      "created_at": "<string>",
      "customer": "<unknown>"
    }
  ]
}