["{\n  \"ConceptSets\": [\n    {\n      \"id\": 0,\n      \"name\": \"Some ConceptSet\",\n      \"expression\": {\n        \"items\": []\n      }\n    }\n  ],\n  \"PrimaryCriteria\": {\n    \"CriteriaList\": [\n      {\n        \"ConditionOccurrence\": {\n          \"CodesetId\": 0\n        }\n      }\n    ],\n    \"ObservationWindow\": {\n      \"PriorDays\": 0,\n      \"PostDays\": 0\n    },\n    \"PrimaryCriteriaLimit\": {\n      \"Type\": \"First\"\n    }\n  },\n  \"QualifiedLimit\": {\n    \"Type\": \"First\"\n  },\n  \"ExpressionLimit\": {\n    \"Type\": \"First\"\n  },\n  \"InclusionRules\": [],\n  \"CensoringCriteria\": [],\n  \"CollapseSettings\": {\n    \"CollapseType\": \"ERA\",\n    \"EraPad\": 0\n  },\n  \"CensorWindow\": {}\n}"]