public class DocuSign {

public void test(String email, String name){
String accountID = 'ec57264a-5e70-****-8ee1-ed2578cd3bdf';
String userName = 'f14763b1-***-**-8e89-ef7297adb9c0';
String passWord = '22223';
String integratorKey = 'EDRE-****-0f94-4e13-8b24-c7ebacb3464a';
String templateID = '6d3eb7ad-77ee-eeee-a22b-efb4f578fc0b';
String endPoint = 'https://demo.docusign.net/restapi/v2/accounts/'+accountID+'/envelopes';
//Apex HTTP Method Initialization.

HttpRequest req = new HttpRequest();
req.setEndpoint(endPoint);
req.setMethod('POST');

String authorizationHeader = '<DocuSignCredentials><Username>'+userName+'</Username><Password>'+Password+'</Password><IntegratorKey>'+integratorKey+'</IntegratorKey></DocuSignCredentials>';
req.setHeader('X-DocuSign-Authentication', authorizationHeader);
req.setHeader('Accept','application/json');
req.setHeader('Content-Length','162100');
req.setHeader('Content-Type','application/json');
req.setHeader('Content-Disposition','form-data');


string b = '{'+
'"emailSubject":"DocuSign Templates Envelope Demo",'+
' "emailBlurb": "demo is sending you this request for your electronic signature.nnPlease review and electronically sign by following the link below. ",'+
'"status": "sent",'  +
'"compositeTemplates": ['+
'{'+
'"serverTemplates": ['+
'{'+
'"sequence": "1",'+
' "templateId": "'+templateID+'",'+
'}'+
'],'+
'"inlineTemplates": ['+
'{'+
'"sequence": "1",'+
'"recipients": {'+
'"signers": ['+
'{'+
' "signingGroupId": "3839076",'+
  '"name": "First Recipient",'+
'"recipientId": "1",'+
'"roleName": "RoleOne"'+
'}'+
']'+
'}'+
'}'+
']'+
'},'+
'{'+
'"serverTemplates": ['+
'{'+
'"sequence": "1",'+
'"templateId": "'+templateID+'",'+
'}'+
'],'+
'"inlineTemplates": ['+
'{'+
'"sequence": "1",'+
'"recipients": {'+
'"signers": ['+
'{'+
'"signingGroupId": "3839076",'+
'"name": "First Recipient",'+
'"recipientId": "1",'+
'"roleName": "RoleOne"'+
'}'+
']'+
'}'+
'}'+
']'+
'}'+
']'+
'}';

 req.setBody(json);
  Http http = new Http();
  HTTPResponse res;
  try{
  //Docusign Request Callout.
  res = http.send(req);
  system.debug('DocuSign Response'+ res.getBody());
  }
  catch(Exception e){
  SYSTEM.DEBUG('!!!!');
    }
 }
}