Nested json object with NVPair for POST

I want to represent the following json string with NVPair in Grinder:

json = '''{
              \"user\"        :  userEmail,\r\n
              \"password\"        :  passwordToUse,\r\n
              \"app_id\"        :  appID,\r\n
              \"rule_id\"         :  \"login\",\r\n
              \"uidpwd\"         :  {\"id\" : userEmail, \"password\" :
passwordToUse},\r\n
              \"sdk_id\"       :  \"1\" \r\n
        }'''


Note the nested object - uidpwd. How can I create this with NVPair? I would
like to use *POST
<http://grinder.sourceforge.net/g3/script-javadoc/net/grinder/plugin/http/HTTPRequest.html#POST(java.lang.String,
HTTPClient.NVPair[])>*(java.lang.String uri,
NVPair<http://grinder.sourceforge.net/g3/script-javadoc/HTTPClient/NVPair.html>
[] formData)

If I use the above string as is with the request.POST(url, json), I get a
400 with this error:

HTTP Status 400 - org.codehaus.jackson.JsonParseException: Unexpected
character ('u' (code 117)): expected a valid value (number, String, array,
object, 'true', 'false' or 'null')
 at [Source: org.apache.catalina.connector.CoyoteInputStream@c8d8c50; line:
1, column: 22]</h1><HR size="1" noshade="noshade"><p><b>type</b> Status
report</p><p><b>message</b> <u>org.codehaus.jackson.JsonParseException:
Unexpected character ('u' (code 117)): expected a valid value (number,
String, array, object, 'true', 'false' or 'null')
 at [Source: org.apache.catalina.connector.CoyoteInputStream@c8d8c50; line:
1, column: 22]</u></p><p><b>description</b> <u>The request sent by the
client was syntactically incorrect.</u></p>


The same string works with curl and I get a 200.

curl -H "Content-Type: application/json" -X POST
http://blah.com:8080/verification/uidpwd -d {\"user\":\"
[email protected]
\",\"app_id\":\"1\",\"rule_id\":\"login\",\"uidpwd\":{\"id\":\"
[email protected]\",\"password\":\"Password$\"},\"sdk_id\":\"1\"}

What am I missing?

Jai

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