List IOC Severities

{
	"meta": {
		"query_time": 0.000291556,
		"powered_by": "ioc-manager",
		"trace_id": "7ead8960-cfac-466b-9b36-1e8450724ccb"
	},
	"errors": null,
	"resources": [
		"critical",
		"high",
		"medium",
		"low",
		"informational"
	]
}