How to create array, dict fields?

Frappe Framework Customization
1

I refer this:

https://frappe.github.io/erpnext/user/manual/en/customize-erpnext/articles/field-types.html

In which field type i can store json like object and array ?

2

What is your use case?

3

Pls see: How to display Item Wise Tax in invoice?