curl -X POST '{backend_url}/admin/customer-groups/{id}' \
-H 'Authorization: Bearer {access_token}' \
-H 'Content-Type: application/json' \
--data-raw '{
"name": "Corbin",
"metadata": {}
}'
{
"customer_group": {
"id": "string",
"name": "string",
"metadata": {},
"created_at": "2019-08-24T14:15:22Z",
"updated_at": "2019-08-24T14:15:22Z",
"customers": [
{}
]
}
}