Open Samsung Health App on the mobile phone.
Go to settings.
Scroll down and tap on download all personal data.
Confirm with your Samsung account password.
On the internal storage you find the data in the subfolder „Download“.
There you find the data splitted into CSV-files.
Bring the files up to a computer and there choose your relevant files (example: heartrate or sleepdata) to open them with Excel.
Crop the first line.
Navigate to your Kibana instance in browser.
There you can import the CSV-file. Choose a unique index name.
Then you can start visualize: