curl --request GET \
  --url https://api-qa.interactly.ai/workflows/v1/workflows/{workflow_id}/versions/{version1_number}/diff/{version2_number} \
  --header 'Authorization: Bearer <token>'

{
  "version1_number": 123,
  "version1_name": "<string>",
  "version2_number": 123,
  "version2_name": "<string>",
  "workflow_config_changes": [],
  "nodes": [],
  "edges": [],
  "summary": {}
}