curl --request GET \
  --url https://app.speckle.systems/objects/{projectId}/{objectId}/single \
  --header 'Authorization: Bearer <token>'

{
  "id": "9b2cdb21da092dbd3558a4bc55b2cf7e",
  "speckle_type": "Base",
  "totalChildrenCount": 0,
  "numbers": [
    0.04667752874618203,
    0.16370857295385177,
    0.1008153029515465
  ]
}