A couple of questions on this citation. First, while the book itself has the name "Kirkebok" embossed on the cover, the archive calls it a klokkerbøker [digital name], Kirkebøker [on label], and Klokerbok [on label]. They all are very close when you translate, it's church book or the watch book. I used the name embossed on the cover and don't reference the other names directly.
Next layer 1 is fairly straight forward, the only catch is that the entire book is section E. In earlier parish records birth, marriage, death ... were all in one book with sections, that changes in this time frame to a specific book per event. Even though there are not separate sections in this record i still put in the section label.
Layer 2 represents a HUGE advantage for Norwegian genealogists, the Digital Archives. BMD and census records are usually scanned and indexed ALL UNDER ONE SITE!! Yipee. There are additional records also scanned and indexed. Not everything is scanned, but for BMD that's nearly 100%. Not all are indexed. So in this case layer 2 points to the digital index, and the permanent ID for the event. While the web address may change it's unlikely they will change the ID for the event.
Layer 3 is the image source. It also has the archive reference. I did not break the reference down into components, but did add the period reference. While you can get to the image from the index (using the scanned button), i've included the link in the citation
Given that most will find the source through the index, that is layer 2, it feels wrong for the index to be level 3.
Vår Frue Parish (Trondheim), “Kirkebok [church book]”, 1922-1949, section “E Døde [Died],” p 56 (stamped), entry 41, buried 11 September 1930, Kristoffer Trondsen Søberg; indexed in “Digital Archives,” National Archives of Norway, permanent ID pg00000005447190 (https://www.digitalarkivet.no/en/view/267/pg00000005447190); citing Regional State Archives in Trondheim, reference SAT/A-1456/602/L0150, period 602C18/1922-1949, indexed image (https://media.digitalarkivet.no/view/39543/58), image 58 of 193.