For QT60 I found this mic connector pinout:
Based on it, the audio cable for Digirig should look like this:
For Radioddity:
RJ-45 pin 8 (SP) → 3.5mm TRRS tip (RIG_AFOUT)
RJ-45 pin 7 (PTT) → 3.5mm TRRS ring 2 (RIG_PTT)
RJ-45 pin 6 (MIC) → 3.5mm TRRS ring 1 (RIG_AFIN)
RJ-45 pin 5 (GND) → 3.5mm TRRS sleeve (GND)