curl --request GET \
  --url https://api.{tenant}.getomneo.com/api/v3/groups/rule-definitions/{ruleDefinition}

{
  "data": {
    "id": 123,
    "handle": "<string>",
    "name": "<string>",
    "description": "<string>",
    "evaluator": "<string>",
    "rule": [
      "<unknown>"
    ],
    "default_arguments": [
      "<unknown>"
    ],
    "context_requirements": [
      "<unknown>"
    ],
    "meta": [
      "<unknown>"
    ],
    "is_active": true,
    "created_at": "<string>",
    "updated_at": "<string>"
  }
}