curl --request GET \
  --url https://api.interchange.io/api/v2/buyer/planning-briefs \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "<string>",
      "customerId": 0,
      "advertiserId": 0,
      "buyerName": "<string>",
      "advertiserName": "<string>",
      "campaignName": "<string>",
      "audience": "<string>",
      "geo": "<string>",
      "channels": [],
      "exclusions": [
        {
          "values": [],
          "raw": "<string>"
        }
      ],
      "startDate": "<string>",
      "endDate": "<string>",
      "flexibility": {
        "days": 4503599627370495
      },
      "statedBudget": 123,
      "currency": "<string>",
      "primaryKpi": {
        "raw": "<string>",
        "parsed": {
          "value": 123
        }
      },
      "priceExpect": 123,
      "creativeReady": true,
      "rawPrompt": "<string>",
      "qualifiedBudget": 123,
      "recommendedProducts": [
        {
          "productId": "<string>",
          "name": "<string>",
          "estimatedCpm": 123,
          "estimatedImpressions": 4503599627370495,
          "estimatedReach": 4503599627370495,
          "matchPct": 50,
          "rationale": "<string>"
        }
      ],
      "createdAt": "<string>",
      "updatedAt": "<string>"
    }
  ],
  "total": 4503599627370495,
  "hasMore": true,
  "nextOffset": 4503599627370495
}