The storage and loss moduli for jammed soft particles are studied computationally for a variety of interparticle potentials and volume fractions. The qualitative behavior of the storage modulus is independent of the nature of the interparticle potential. The frequency dependence of the storage modulus computed in the simulations is described by a universal logistic formula exhibiting two plateaus at low and high frequencies. While the high frequency modulus G  follows the prediction of the Mountain-Zwanzig expression, which depends on the pair distribution function and pairwise interparticle potential, no such formula exists for the low frequency modulus 0