Creates a new signature for a user. IIt returns a signature ID after it successfully completes. HTML signatures are stored as a MIME type, according to the MIME (RFC822) standard for storing signatures.
<createSignatureRequest> <signature/> </createSignatureRequest>
<createSignatureResponse> <status/> </createSignatureResponse>
Specifies the signature to be created.
Returns the error number related to the event. 0 indicates that the request was successful.
Returns the success or failure of the method.