curl --location --request POST '/v4/jobs/a1b2c3d4-e5f6-7890-abcd-ef0123456789/cancel' \
--header 'Authorization: Bearer <apiKey>'{"jobId": "a1b2c3d4-e5f6-7890-abcd-ef0123456789", "type": "contacts.import", "status": "cancelled", "progress": {"total": 5000, "processed": 3200, "succeeded": 3180, "failed": 20}, "createdAt": "2026-06-22T10:00:00Z", "startedAt": "2026-06-22T10:00:01Z", "finishedAt": "2026-06-22T10:01:12Z", "expiresAt": "2026-07-06T10:00:00Z", "error": null, "links": {"self": "/v4/jobs/a1b2c3d4-e5f6-7890-abcd-ef0123456789", "items": "/v4/jobs/a1b2c3d4-e5f6-7890-abcd-ef0123456789/items"}}