Let y = y(x) be the solution of the differential equation, ${\left(x^2-1\right)}^2\frac{dy}{dx}+2x\left(x^2+1\right)y=1$ such that y(0) = 0. If $\sqrt{a}y\left(1\right)=\frac{\pi }{32}$, then the value of ‘a’ is