Get Group Attributes

{
	"link": {
		"href": "https://crowdserver/crowd/rest/usermanagement/1/group/attributes?username=sampleuser",
		"rel": "self"
	},
	"attribute": [
		{
			"link": {
				"href": "https://crowdserver/crowd",
				"rel": "self"
			},
			"name": "attribute",
			"values": [
				"value1",
				"value2"
			]
		}
	]
}