curl --request GET \
  --url https://api.example.com/api/resilience/v1/get-resilience-ranking

{
  "items": [
    {
      "countryCode": "<string>",
      "overallScore": 123,
      "level": "<string>",
      "lowConfidence": true,
      "overallCoverage": 123,
      "rankStable": true,
      "headlineEligible": true
    }
  ],
  "greyedOut": [
    {
      "countryCode": "<string>",
      "overallScore": 123,
      "level": "<string>",
      "lowConfidence": true,
      "overallCoverage": 123,
      "rankStable": true,
      "headlineEligible": true
    }
  ]
}