curl --request GET \
--url https://YOURSITE.konstant.ly/openapi/v1/courses/123/certificates \
--header 'X-API-KEY: 1qaz2wsx3edc4rfv1qaz2wsx3edc4rfv'

{
    "certificates": [
{
    "id": 123,
    "name": "Course Completion Certificate",
    "description": "Certificate of completion",
    "courseId": 2,
    "courseName": "Advanced Sales Techniques",
    "imageUrl": "http://s3.amazonaws.com/certificates/cert123.png",
    "achievedAt": 1234567890,
    "expiresAt": 1334567890,
    "user": {
    "id": "1234567890",
    "name": "John Doe",
    "email": "john@example.com",
    "role": {
    "alias": "learner"
}
}
}
    ],
    "totalCount": 1
}