How to make HttpGet accept an incoming ViewModel

I've been messing around with a web api, but I need a GET method that reads an incoming dto so it can use multiple parameters in its search. Basically something like this:

[HttpGet("{AccountDTO}")]
public string Get(AccountDTO dto)
{
     // Parse the dto, then do stuff
     return "Hit it";
}

Anyone know how to do this? The DTO has four properties, so I thought it would work just calling

http://localhost:52743/api/accounts/?AccountNumber=123456&AccountName=DEV&BrokerName=Test&Symbol=GBPUSD

It does not... Any links to tutorials are greatly appreciated as the official one is still rather thin.

TIA!

Dennis