Hi,
I have just developped a first version of arduino adaptor for UBW32, this version is basic because only Power Supply and SPI are connected in order to have a working NFC shield v0.9
I will update it later with other pins connection to add analog pins and other GPIO (which requires power adaptation because they are limited to 3.3V on PIC32).
Basic Schematic of the modification:[attachment=2]
See pictures of the board:[attachment=0]
[attachment=1]
[attachment=3]