PhonePlan(PhonePlan)

{
    "plan_base": {
        "callout_countries": "string",
        "type": "string"
    },
    "plan_calling": [
        {
            "hosts": 0,
            "type": "string"
        }
    ],
    "plan_number": [
        {
            "hosts": 0,
            "type": "string"
        }
    ]
}