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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def make_payload(base, method, params):
 """Build Betfair JSON-RPC payload. :param str base: Betfair base ("Sports" or "Account") :param str method: Betfair endpoint :param dict params: Request parameters """

    payload = {
        'jsonrpc': '2.0',
        'method': '{base}APING/v1.0/{method}'.format(**locals()),
        'params': utils.serialize_dict(params),
        'id': 1,
    }
    return payload