Json format equivalent of the map data type

I want the json format equivalent of the map data type which can be upserted to tigergraph. On trying the payload
{​"vertices":{​"MapTesting":{​"tushartrymap":{​"mapOfState":{​"value":{​"red":1,“green”:2}​}​}​}​}​}​
i am getting the error
The payload json value ‘red’ is not valid, expecting “keylist” or “valuelist”