curl --request PUT \
  --url https://app.plugchoice.com/api/v3/chargers/{charger}/proxy \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "vendor_role": "<string>",
  "servers": [
    {
      "servers[].websocket": "<string>",
      "servers[].role": "<string>"
    }
  ]
}
'

{
  "data": [
    {
      "websocket_url": "<string>",
      "role": "<string>",
      "created_at": "<string>",
      "updated_at": "<string>"
    }
  ]
}