curl --request POST \
  --url https://api.withsplendor.com/v1/admin/semantic/filters/backfill \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-splendor-tenant-id: <x-splendor-tenant-id>' \
  --data '
{
  "dataset_id": "<string>",
  "source_id": 123
}
'

{
  "completed_at": "2026-01-15T09:30:00Z",
  "created_at": "2026-01-15T09:30:00Z",
  "dataset_id": "products",
  "error_message": null,
  "job_id": "sfb_01H8Z3",
  "object_count": 1840,
  "source_count": 2,
  "source_id": null,
  "status": "complete",
  "tenant_id": "acme",
  "updated_at": "2026-01-15T09:30:00Z",
  "updated_count": 95000
}