curl --request POST \
  --url https://api.decodahealth.com/notes/templates/upload-attachment \
  --header 'API-KEY: <api-key>' \
  --header 'Content-Type: multipart/form-data' \
  --header 'TENANT: <tenant>' \
  --form attachment='@example-file'

{
  "gcsPath": "<string>",
  "signedUrl": "<string>",
  "originalFilename": "<string>"
}