curl --request GET \
  --url https://api.interchange.io/api/v2/buyer/advertisers/{advertiserId}/measurement-config \
  --header 'Authorization: Bearer <token>'

{
  "measurementConfig": {
    "advertiserId": "12345",
    "mmmEnabled": true,
    "brandLiftEnabled": true,
    "createdAt": "2025-01-15T10:30:00Z",
    "updatedAt": "2025-01-20T14:45:00Z",
    "mmmConfig": {
      "provider": "measured",
      "dataSourceIds": [
        "ds_123",
        "ds_456"
      ]
    },
    "settings": {}
  }
}