curl --request GET \
  --url https://api.example.com/feature-flags/definitions

{
  "data": {
    "flags": [
      {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "key": "<string>",
        "defaultValue": true,
        "assignments": [
          {
            "subscriberId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
            "value": true,
            "subscriber": {
              "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
              "title": "<string>"
            }
          }
        ]
      }
    ],
    "subscribers": [
      {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "title": "<string>"
      }
    ]
  }
}