How to convert to image with base64 string SwiftUI to Image()

How do I get this data in the contentView.

I click the authorize button and I get json data. struct User: Decodable { var a: String enum CodingKeys: String, CodingKey { case a = "Date of Birth" }  init(from decoder: Decoder) throws {     let container = try decoder.container(keyedBy:CodingKeys.self) a = try container.decode(String.self, forKey: .a) } } after clicking the button, I go to the main view and there how to get data from the User structure that was decoded