{
  "Details": {
    "ContactData": {
      "Attributes": {},
      "Channel": "VOICE",
      "ContactId": "11111111-2222-3333-4444-555555555555",
      "CustomerEndpoint": { "Address": "+15555550100", "Type": "TELEPHONE_NUMBER" },
      "InitiationMethod": "INBOUND",
      "Name": "ContactFlowEvent"
    },
    "Parameters": {}
  },
  "Name": "ContactFlowEvent"
}