signatureValue contains new line and returns error

Hi, 

I configured the signature in Outgoing WSS Configuration to apply wss to my message,

I obtain a signatureValue that contains new line: 

<ds:SignatureValue>123[\n]456[\n]890</ds:SignatureValue>

the server receives signature value with new line answer with an error, the server needs signature value WITHOUT new line.

How can I obtain signature value without new line?

Thanks