ButtonBlock doesn't exist yet

Block Data
{
  "type": "entity",
  "entity_type": "block_content",
  "bundle": "button",
  "id": "204409",
  "label": "Inline block",
  "transform_mode": "default",
  "langcode": "da",
  "field_button": {
    "title": "AKTUELLE FILM I BIOGRAFEN",
    "url": "https://kino.dk/aktuelle-film",
    "class": "button--normal",
    "target": ""
  },
  "field_button_alignment": "left"
}

AdvertisementBlock doesn't exist yet

Block Data
{
  "type": "entity",
  "entity_type": "block_content",
  "bundle": "advertisement",
  "id": "26728",
  "label": "DSK + MOB pos 2",
  "transform_mode": "default",
  "langcode": "da",
  "field_code_content": "<div id=\"cncpt-lb2\"></div>\r\n<div id=\"cncpt-mob2\"></div>",
  "field_code_ids": [
    "cncpt-lb2",
    "cncpt-mob2"
  ]
}