{
  "destination": "+15551112222",
  "caller_id": "+15551234567"
}
                      

{
  "session_id": "session_abc123"
}
                      

{
  "ring_detected": true
}
                      

{
  "answer_time_ms": 10000
}
                      

{
  "flow_id": "flow_summer_promo"
}
                      

{
  "digits": "1"
}
                      

{
  "digits": "5"
}
                      

{
  "disposition_code": "COMPLETE",
  "duration_ms": 180000,
  "hangup_reason": "normal"
}