Don't. You will potentially become very ill.
Soya, like a several pulses / beans contains an anti-trypsin factor (or trypsin inhibitor) which 'prevents the assimilation of the amino acid methionine'. Slightly important stuff....humans can not 'make' it and have to absorb it through eating, and methionine is needed to 'tell' the digestion system to get on with absorbing the nutrition in food. Also you will develop atherosclerosis - furring of the arteries - if you can not create the right type of methionine, which is an 'essential nonpolar amino acid'.
The beans, if a dried product, should be soaked for at least 12 hours, drained and rinsed then covered with fresh water and brought to the boil. and boiled for at least an hour before use. Soya flour is a heat treated product, cooked soya then cooled and powdered.
Also do not add 'un-boiled' soya beans to a slow cooker for the same reason - always boil first for 15 mins & then place into pot.