This is the error from the test run every time I've tried. I don't know exactly what the problem is.
This is the code view (text in spanish):

Hi there!
If you don't mind, I'll reply in Spanish below, but keeping in English this section for future visits. That said, I'm noticing a couple of odd things in your JSON, such as "body/body/messageBody". Why did you include body twice?
Not sure if you're familiar with this tool, but I'd recommend giving it a try: it's a great low-code tool from Microsoft that helps you design Adaptive Cards visually, and then gives you the JSON to use anywhere.
Do you happen to have a sketch or mockup of what you're trying to achieve with the Adaptive Card?
¡Hola!
Si no te importa, te respondo en español, creo que asà podré ayudarte un poco más claramente. Estoy viendo un par de cosas raras en tu JSON, como por ejemplo "body/body/messageBody". ¿Por qué pusiste body dos veces?
No sé si conoces esta herramienta, pero te recomendarÃa que le des una oportunidad. Es una herramienta bastante interesante de Microsoft para crear Adaptive Cards usando un enfoque low-code, y luego te genera el JSON para usarlo donde necesites.
¿Tienes un boceto o mockup de lo que quieres lograr con esta Adaptive Card?
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José MartÃnez Lago
Solution Architect | Dynamics 365 & Power Platform
Empowering low-code consultants to deliver high-impact solutions
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