curl --request GET \
  --url https://api.virtuoussoftware.com/api/VolunteerOpportunity/{volunteerOpportunityId}/Volunteers/{volunteerId}/Attendance \
  --header 'Authorization: Bearer <token>'

[
  {
    "id": "<integer>",
    "volunteerAttendanceUrl": "<string>",
    "volunteerId": "<integer>",
    "volunteerUrl": "<string>",
    "volunteerOpportunityId": "<integer>",
    "volunteerOpportunityUrl": "<string>",
    "hours": "<double>",
    "startDateTimeUtc": "<dateTime>",
    "startDateTime": "<dateTime>",
    "endDateTimeUtc": "<dateTime>",
    "endDateTime": "<dateTime>",
    "timeZone": "<string>",
    "createDateTimeUtc": "<dateTime>",
    "createdByUser": "<string>",
    "modifiedDateTimeUtc": "<dateTime>",
    "modifiedByUser": "<string>"
  },
  {
    "id": "<integer>",
    "volunteerAttendanceUrl": "<string>",
    "volunteerId": "<integer>",
    "volunteerUrl": "<string>",
    "volunteerOpportunityId": "<integer>",
    "volunteerOpportunityUrl": "<string>",
    "hours": "<double>",
    "startDateTimeUtc": "<dateTime>",
    "startDateTime": "<dateTime>",
    "endDateTimeUtc": "<dateTime>",
    "endDateTime": "<dateTime>",
    "timeZone": "<string>",
    "createDateTimeUtc": "<dateTime>",
    "createdByUser": "<string>",
    "modifiedDateTimeUtc": "<dateTime>",
    "modifiedByUser": "<string>"
  }
]