Получение списка (словаря) profiles (ID для полей vm_os_type и vm_os_profile):
Запрос:

{
        "jsonrpc":      "2.0",
        "method":       "vm-profiles",
        "id":           "a163d320-dad2-11e9-a9b9-6a1583008659"
}

Ответ:

{
   "id" : "a163d320-dad2-11e9-a9b9-6a1583008659",
   "jsonrpc" : "2.0",
   "result" : {
      "code" : 1,
      "data" : {
         "1" : {
            "name" : "FreeBSD",
            "profiles" : [
               {
                  "description" : "FreeBSD 12.0-RELEASE",
                  "id" : 14,
                  "min_size" : 4294967296,
                  "name" : "cloud-FreeBSD-x64-12.0"
               }
            ]
         },
         "6" : {
            "name" : "Linux",
            "profiles" : [
               {
                  "description" : "Debian 10.1 cloud image",
                  "id" : 15,
                  "min_size" : 4294967296,
                  "name" : "cloud-Debian-x64-10.1"
               },
               {
                  "description" : "CentOS 7.7 cloud image",
                  "id" : 4,
                  "min_size" : 4294967296,
                  "name" : "cloud-CentOS-7-x86_64"
               },
               {
                  "description" : "Ubuntu 18.04 cloud image",
                  "id" : 8,
                  "min_size" : 4294967296,
                  "name" : "cloud-ubuntuserver-amd64-18.04"
               }
            ]
         },
         "7" : {
            "name" : "Windows",
            "profiles" : [
               {
                  "description" : "Windows Server 2019 standard",
                  "id" : 12,
                  "min_size" : 17179869184,
                  "name" : "cloud-Windows-Server-2019-standart-x64"
               }
            ]
         }
      }
   }
}