Referencing secondary manifests in dash

Hi,

I am currently exploring SSAI implementation via mediatailor. From the looks of it, by default mediatailor requires the entire VMAP response at the start. I am looking for a way (in VOD) where I can defer which the decision of which ad needs to be player till the cue-point is reached. I want to check if there is a way to reference a dash manifest from my current manifest i.e. if there is a possibility of having nested dash manifests so that I can add a reference to manifest link which will be created at runtime.