Why are you passing data (a dictionary) on the URL via [HttpGet]? SHouldn't that go into an [HttpPost] and then [FromBody]? This seems bad behavior for a REST service.

+++ Rick ---

>>I think you're essentially receiving a dictionary and a dictionary is JSON serialized as a map:
>>
>>

>>{
>>   "key": "value",
>>   "key2:" "value"
>>}
>>

>>
>Hi Rick,
>
>My problem was to correctly pass the object using the HttpGet method. After some googling around I found I need to use [FromUri] attribute to pass such parameter correctly.