Add document V2

- **signature**: Upload user's digital signature. This can be later fetched in get images endpoint. - **document**: Upload user's proof of address document. This can be later fetched in get images endpoint. - **addressStatement**: (Legacy) Upload user's proof of address document. Used for backward compatibility. Use type 'document' instead. - **medicalDoc**: Upload user's medical document. - **thirdId**: Upload user's third ID. - **contract**: Upload contract image.

Only if type is contract. Title of contract.

Only if type is document. Possible values are image (jpg and png supported) or pdf. Default is image.

Image in base64 format. One of base64Image or imageUrl is required

URL of the image. One of base64Image or imageUrl is required