{ "request": { "method": "POST", "url": "https://api.vistra.com/v1/external/documents/upload-url", "headers": { "Authorization": "Bearer {{VISTRA_ACCESS_TOKEN}}", "Content-Type": "application/json" }, "body": { "filename": "passport-jane-smith.pdf", "contentType": "application/pdf", "description": "Director passport for BVI incorporation" } }, "response": { "status": 200, "headers": { "Content-Type": "application/json" }, "body": { "documentId": "doc-a1b2c3d4-e5f6-7890-abcd-ef1234567890", "uploadUrl": "https://vistra-documents.s3.amazonaws.com/uploads/doc-a1b2c3d4-e5f6-7890-abcd-ef1234567890?AWSAccessKeyId=...", "expiresAt": "2026-05-03T14:05:00Z" } } }