{
  "users": [
    {
      "id": "u1",
      "name": "Ari"
    },
    {
      "id": "u2",
      "name": "Bo"
    }
  ],
  "purchases": [
    {
      "id": "p1",
      "userId": "u1",
      "courseId": "c1",
      "amountCents": 1200
    },
    {
      "id": "p2",
      "userId": "u2",
      "courseId": "c2",
      "amountCents": 3400
    }
  ],
  "progress": [
    {
      "id": "g1",
      "userId": "u1",
      "courseId": "c1",
      "percent": 25
    },
    {
      "id": "g2",
      "userId": "u2",
      "courseId": "c2",
      "percent": 100
    }
  ],
  "jobs": [
    {
      "id": "j1",
      "userId": "u2",
      "purchaseId": "p1",
      "status": "done"
    },
    {
      "id": "j2",
      "userId": "u2",
      "purchaseId": "p2",
      "status": "queued"
    }
  ]
}