Assistance/Clarification re: 1Password CLI Authentication

@1P_Amanda / 1P_Gem - I don't suppose either of you have any input on this one? Submitted a support ticket but haven't received any response. This has been holding up a large project of ours. I just need clarity re: using Service Account integrations. Documentation reads as though a licensed user account is required to make it work however if that's the case then I'm not sure what the point of the Service Account is to begin with. (And if that user account is NOT required, how does one authenticate with it?)

Any assistance / input you could provide would be graciously appreciated.