Adjust variant stock by delta

A valid request URL is required to generate request examples

{
  "data": {
    "available_online": true,
    "created_at": "<string>",
    "id": "<string>",
    "inventory_date": "<string>",
    "quantity": 123,
    "updated_at": "<string>",
    "warehouse_name": "<string>",
    "warehouse_slug": "<string>"
  },
  "details": [
    "<string>"
  ],
  "success": true
}

{
  "details": [
    "<string>"
  ],
  "message": "<string>",
  "success": true
}

{
  "details": [
    "<string>"
  ],
  "message": "<string>",
  "success": true
}

{
  "details": [
    "<string>"
  ],
  "message": "<string>",
  "success": true
}