Web shows me MÃ © xico instead of México Charset UTF-8 in API REST

#!/usr/bin/env python
#==============================================================================
import argparse
import httplib2
import json
import urllib

#==============================================================================
def portal_login(url,username,password,disable_cert_validation):
    http = httplib2.Http(disable_ssl_certificate_validation=disable_cert_validation)
    API="/loginservice"
    URL=url+API
    body={'username': username, 'password': password, 'redirect': 'false'}
    headers={"Content-type":"application/x-www-form-urlencoded"}
    response, content = http.request(URL,'POST',headers=headers,body=urllib.urlencode(body))
    if response.status!=200:
      raise Exception("HTTP STATUS: "+str(response.status))
    return response['set-cookie']

#==============================================================================
def create_group(url,cookie,name,disable_cert_validation):
    http = httplib2.Http(disable_ssl_certificate_validation=disable_cert_validation)
    API="/API/identity/group/"
    URL=url+API
    headers={"Content-type":"application/json",'Cookie': cookie}
    data={"icon":"","name":name,"displayName":"","parent_group_id":"","description":""}
    data = json.dumps(data)
    response, content = http.request(URL, 'POST',headers=headers, body=data)
    if response.status!=200:
      raise Exception("HTTP STATUS: "+str(response.status)+" "+content)
    else:
      data = json.loads(content)
      return data['id']

#==============================================================================
def main():
    parser = argparse.ArgumentParser(description='Create a Bonita group',
        add_help=False)
    # required arguments
   required = parser.add_argument_group('required arguments')
    required.add_argument("--login",
        required=True,
        help="Account used to authenticate you on Bonita",
        metavar="install")
    required.add_argument("--password",
        required=True,
        help="Password used with your account",
        metavar="install")
    required.add_argument("--url",
        required=True,
        help="Bonita BPM url",
        metavar="http://example.com:8080/bonita")
    required.add_argument("--name",
        required=True,
        help="Group name",
        metavar="México")
    # optional arguments
   optional = parser.add_argument_group('optional arguments')
    optional.add_argument('-h', '--help',
        action='help',
        help="Show this help message and exit")
    optional.add_argument("--disable_ssl_certificate_validation",
        help="Used this only for tests with a self-signed certificate",
        action="store_true")

    args = parser.parse_args()

    cookie=portal_login(args.url,args.login,args.password,args.disable_ssl_certificate_validation)
    gid=create_group(args.url,cookie,args.name,args.disable_ssl_certificate_validation)

#==============================================================================
if __name__ == "__main__":
    main()
             

./create_bonita_group.py --login install --password install --url http://127.0.0.1:8080/bonita --name México