curl --request POST \
  --url https://api.prequel.co/import/sources/{id}/preview \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "table": {
    "source_table_namespace": "<string>",
    "source_table_name": "<string>"
  }
}
'

{
  "status": "<string>",
  "data": {
    "schema": [
      {
        "name": "<string>",
        "raw_type": "<string>",
        "prequel_type": "<string>",
        "ordinal_position": 123,
        "is_nullable": true
      }
    ],
    "records": [
      "<unknown>"
    ]
  },
  "message": "<string>"
}