curl --request PUT \
  --url https://statsigapi.net/console/v1/experiments/{id}/abandon \
  --header 'Content-Type: application/json' \
  --header 'STATSIG-API-KEY: <api-key>' \
  --data '{
  "decisionReason": "Your reason for stopping early"
}'

{
  "message": "Experiment successfully abandoned."
}