In general, a party is charged with knowledge of the contents of a writing when he or she signs it and cannot avoid a writing simply because he or she failed to read the entire writing. Ray Tucker & Sons v. GTE Directories Sales Corp., 253 Neb. 458, 571 N.W.2d 64 (1997). It is well-settled law in Nebraska that one who signs a writing without reading it, when he or she can read and has the opportunity to do so, cannot avoid the effect of his or her signature merely because he or she was not informed of the contents of the writing. Walker v. Walker Enter., 248 Neb. 120, 532 N.W.2d 324 (1995).