curl --request POST \
  --url https://api.comm.com/api/v1/sms/routing/plans/{plan}/simulate/country \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "country_id": 123,
  "network_id": 123,
  "counter": 1
}
'

{
  "data": {
    "contacts_count": 123,
    "resource": {
      "to_send": true,
      "fail_reason": "No route found",
      "status": {},
      "selected_method": {},
      "selected_action": {},
      "selected_rule_id": "<string>",
      "selected_route": "<string>",
      "costs": {
        "cost_platform_customer": 123,
        "cost_route_vendor": 123,
        "cost_route_seller": 0,
        "cost_platform_seller": 0,
        "sms_route_rate_id": "<string>"
      }
    },
    "country_ids": [
      "<string>"
    ],
    "network_ids": [
      "<string>"
    ]
  }
}