curl --request GET \
  --url https://app.allyy.io/api/data/v1.0/customer/{customerId}/dataset/{dataSetId}/DataSource/{datasourceId} \
  --header 'Authorization: Bearer <token>'

{
  "meta": {
    "errors": [
      {
        "code": "<string>",
        "message": "<string>"
      }
    ],
    "validation": [
      {
        "property": "<string>",
        "message": "<string>"
      }
    ],
    "info": {}
  },
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "name": "<string>",
    "entityType": 1,
    "type": 0,
    "columns": [
      {
        "name": "<string>",
        "type": 1
      }
    ],
    "customColumns": [
      {
        "name": "<string>",
        "type": 1,
        "value": "<string>"
      }
    ],
    "values": [
      {}
    ]
  }
}