Get default customer group.
<integer>
GET /V1/customerGroups/default HTTP/1.1 Host: {{baseurl}} Accept: */*
OK
{ "code": "<string>", "tax_class_id": "<integer>", "id": "<integer>", "tax_class_name": "<string>", "extension_attributes": "<object>" }
(Required)
GET /V1/customerGroups/default/{storeId} HTTP/1.1 Host: {{baseurl}} Accept: */*
Set system default customer group.
PUT /V1/customerGroups/default/{id} HTTP/1.1 Host: {{baseurl}} Accept: */*
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