curl --request GET \
  --url https://api.courier.com/bulk/{job_id} \
  --header 'Authorization: Bearer <token>'

{
  "job": {
    "definition": {
      "template": "<string>",
      "brand": "<string>",
      "data": {},
      "event": "<string>",
      "locale": {},
      "override": {}
    },
    "enqueued": 123,
    "failures": 123,
    "received": 123,
    "status": "CREATED"
  }
}