curl \
 --request DELETE 'https://api.plannrcrm.com/api/v1/conversation/conversation_uuid/leave' \
 --header "Authorization: Bearer {OAUTH_ACCESS_TOKEN or PERSONAL_ACCESS_TOKEN}" \
 --header "Content-Type: application/json" \
 --header "Accept: application/json" \
 --header "X-PLANNR-ACCOUNT-UUID: {YOUR_PLANNR_ACCOUNT_UUID}"