actix_web How to get the response body from awc::client::ClientResponse

I am trying to get the response out of the awc::client::ClientResponse. But always get the empty string. If I use the same request with curl I get the response. Here is what I am trying This is a actix_web service which accepts the json request and call other service to get the response. and then sends it back to the client.

async fn get_info(info: actix_web::web::Json<Info>) -> impl Responder {
    let mut builder = SslConnector::builder(SslMethod::tls()).unwrap();
    builder.set_verify(SslVerifyMode::NONE);
    let myconnector = builder.build();

    let client = Client::builder()
        .connector(Connector::new().ssl(myconnector).finish())
        .finish();
    let fund_card_req:FundingCardRequest = FundingCardRequest::new(vec![Accounts::new("45135612".to_string(), 666666)], 
        String::from("INCOMING"), 
        String::from("ACH"), 1095434517);
        println!("{:?}", serde_json::to_string(&fund_card_req));
        let mut response = client.post("https://mn.sit.jq.com/fundingcard-activity")
        .timeout(core::time::Duration::from_secs(10))
        .header("Content-Type", "application/json")
        .send_json(&fund_card_req).await.unwrap();
        match response.status(){
            StatusCode::OK => {
                println!("status: success");
                let k = response.body().limit(20_000_000).await.unwrap();
                println!("{:?}", str::from_utf8(&k)); 
            },
            _ => println!("status: failed"),

        }
    HttpResponse::Ok().body("hello world")
}

I have gone through most of the examples client examples on rust Following is my setup.

actix-web = {version ="3.3.2", features = ["openssl"]}
actix-service = "1.0.1"
openssl = "0.10.29"