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

{
  "eventSources": [
    {
      "eventSourceId": "retailer_sales",
      "name": "Retailer Sales Pixel",
      "eventTypes": [],
      "allowedDomains": [
        "<string>"
      ],
      "integrationPlatform": "<string>",
      "mapping": {
        "eventIdField": "<string>",
        "eventTypeField": "<string>",
        "eventTimeField": "<string>",
        "userMatchFields": [
          "<string>"
        ],
        "valueField": "<string>",
        "currencyField": "<string>",
        "orderIdField": "<string>",
        "contentIdsField": "<string>",
        "consentField": "<string>",
        "dedupeStrategy": "<string>",
        "notes": "<string>"
      },
      "testEventCode": "<string>",
      "health": {
        "lastEventAt": "2023-11-07T05:31:56Z",
        "lastEventReceivedAt": "2023-11-07T05:31:56Z",
        "lastError": "<string>",
        "lastErrorAt": "2023-11-07T05:31:56Z"
      },
      "createdAt": "2026-01-15T10:30:00.000Z",
      "updatedAt": "2026-01-20T14:45:00.000Z"
    }
  ],
  "total": 5
}