Rename all keys in an object

I’m trying to rename all the keys in an object to a new and different key which is value but all solutions I found on the internet show how to add a prefix to an existing key thus renaming it.

I have the following implementation

const shippingOption =  {
                "": "Automatic",
                "ES_CartasNacionalesDeMas20": "Correos: cartas ordinarias, 2-4 Days",
                "ES_CorreosCartasCertificadas": "Correos: cartas certificadas, 2-4 Days",
                "ES_CorreosCartasCertificadasUrgentes": "Correos: cartas certificadas urgentes, 1-2 Days",
                "ES_CorreosChronoexpres": "Correos Express / Paq 24, 1 Day",
                "ES_CorreosPaq48": "Correos: Paq Premium, 2 Days",
                "ES_CorreosPaq72": "Correos: Paq Estándar, 2-3 Days",
                "ES_EconomyDeliveryFromAbroad": "Envío económico desde el extranjero, 10-22 Days",
                "ES_EconomyShippingFromGC": "Envìo economico desde China/Hong Kong/Taiwan to worldwide, 11-35 Days",
                "ES_EconomySppedPAK": "Envìo SpeedPAK economico desde China/Hong Kong/Taiwan, 10-15 Days",
                "ES_ENTREGA_KIALA_8KG": "Entrega a un punto Kiala (hasta 8 kg), 2-4 Days",
                "ES_EntregaConInstalacion": "Entrega con instalación (ver detalles), 3-5 Days",
                "ES_EntregaEnElPortal": "Entrega en el portal (ver detalles), 3-5 Days",
                "ES_EntregaEnNacexShop": "Entrega en NACEX.shop, 1-2 Days",
                "ES_EnvioEstandarAIslasBalearesCeutaMelilla": "Envío estándar a Ceuta/Melilla, 3-7 Days",
                "ES_EnvioEstandarALasIslasCanarias": "Envío estándar a las islas Canarias, 3-7 Days"
    }

let renamed= Object.entries(shippingOption).reduce((acc, [k, v]) => {
    return { ...acc, [`value[${k}]`]: v};
}, {})

How can I do this?