curl --request GET \
  --url https://controller.platform.simplecloud.app/v0/server-groups/start-queue \
  --header 'X-Network-ID: <x-network-id>' \
  --header 'X-Network-Secret: <x-network-secret>'

{
  "count": 2,
  "failed_starts": 1,
  "items": [
    {
      "failed_starts": 1,
      "queued_starts": 2,
      "server_group_id": "123e4567-e89b-12d3-a456-426614174000",
      "server_group_name": "lobby",
      "starts": [
        {
          "created_at": "2023-01-01T12:00:00Z",
          "failure_reason": "no capacity: group is at maximum servers",
          "id": "123e4567-e89b-12d3-a456-426614174000",
          "status": "pending"
        }
      ],
      "total_starts": 3
    }
  ],
  "queued_starts": 2,
  "total_starts": 3
}