Apollo router accept application/x-www-form-urlencoded

Hi, We have a client that posts queries to graphql using content type application/x-www-form-urlencoded and set the query and variables in the body. We could make this work with NodeJS version of apollo and wondered if there is a way to make it work with Apollo Router. Right now when I post to Apollo Router I get

“message”: “‘content-type’ header can’t be different from "application/json" or "application/graphql-response+json"”,
“extensions”: {
Something like it could pass the request to a rhia script and we could parse the json in there or convert it to json something like that?