curl --request POST \
  --url 'https://api.nsr.stateset.com/api/v1/beliefs/contradict' \
  --header 'X-API-Key: YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "proposition": "socrates_is_mortal",
  "source": "inference",
  "strength": 0.3
}'

{
  "change": 1,
  "new_confidence": 1,
  "previous_confidence": 1,
  "proposition": "string"
}