{
    "service":"xyz.openbmc_project.Inventory.Manager"
    "root_path":"/xyz/openbmc_project/inventory/system/",
    "entities":[
        {
            "interface" : "xyz.openbmc_project.Inventory.Item.Board",
            "entity_type" : 64
        },
        {
            "interface" : "xyz.openbmc_project.Inventory.Item.Cpu",
            "entity_type" : 135
        }
    ]
}