{
    "id":1001,
    "method":"cancelarCFDI",
    "params": {
        "user":"miemail@midominio.com",
        "pass":"cabb17fb8536180e11af6dff0da42132",
        "RFC":"EEM010101XYZ",
        "pfx_pass":"Clave de mi archivo PFX",
        "pfx_pem":"Archivo PFX de mi CSD",
        "folios": [
            "25916C58-672A-43CD-96EE-F14E0FDD4378",
            "9F5E685B-1444-4B54-9421-FBC9203686B2",
            "C0FAA75F-974C-41C9-80A7-5C744517F81F"
        ]
    }
}