Passing query to JSON API call

I am having some issues trying to add query to json call as follows:

Exception: Invalid argument: https://kc.humanitarianresponse.info/api/v1/data/438568934?format=json&query={“I_General/state”:“123”,“M342”,“F343”}

Not sure what is wrong with my query ?

I am having some issues trying to add query to json call as well as follows:

Exception: Invalid argument: https://kc.humanitarianresponse.info/api/v1/data/438568934?format=json&query={“I_General/state”:“123”,“M342”,“F343”}

Not sure what is wrong with my query ?