"scenario":
{
  "id": "scenario-id",
  "variables": [
    {
      "id": "userIds",
      "type": "guid",
      "count": 10000
    },
    {
      "id": "productIds",
      "type": "unsignedInt",
      "count": 1000
    }
  ],
  "transactions": [
    { 
      "id": "add-items-to-basket", 
      "arguments":[
	{ 
	  "name": "userId", 
	  "value": "userIds",
	  "distribution": "zipfian"
	}
      ]
    },
    { 
      "id": "update-catalog-item-price", 
      "arguments":[
	{ 
	  "name": "userId", 
	  "value": "userIds",
	  "distribution": "uniform"
	},
	{ 
	  "name": "productId", 
	  "value": "productIds",
	  "distribution": "zipfian"
	}
      ]
    }
  ]	
}