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Digital signatures are a fundamental building block for ensuring integrity and authenticity of contents delivered by the Named Data Networking (NDN) systems. However, current digital signature schemes adopted by NDN open source libraries have a high computational and communication overhead making them unsuitable for high throughput applications like video streaming and virtual reality gaming. In this poster, we propose a real-time digital signature mechanism for NDN based on the offline-online signature framework known as Structure-free and Compact Real-time Authentication scheme (SCRA). Our signature mechanism significantly reduces the signing and verification costs and provides different variants to optimize for the specific requirements of applications (i.e. signing overhead, verification overhead or communication cost). Our experiments results show that SCRA is a suitable framework for latency-sensitive NDN applications.