Create usd-to-pix order with inputed information. pixKey is either the key associated to a bank account, or a BR Code, which is the content of a QR code. A BR Code can either have the amount specified or not. If it is specified, the amount should match the BRLA amount in the token from the fast-quote endpoint. The taxId field is only necessary if paying a natural person (CPF). Fill name, ispb, branchCode, accountNumber and accountType if you don't want to use a pix key