curl --request DELETE \
  --url https://{appid}.api-{region}.cometchat.io/v3/users/{uid} \
  --header 'Content-Type: application/json' \
  --header 'apikey: <api-key>' \
  --data '{
  "permanent": "false"
}'

{
  "data": {
    "success": true,
    "message": "User with superhero6 has been deleted successfully."
  }
}