The user centric metadata model aims to foster multi-disciplinary research, describing dataset of different disciplines in the same manner. It is able to favour the user viewpoint using the observation paradigm, adopted by the Observation&Measurement data model, for specifying the dataset content. The advantages of the proposed metadata model are that the model specifies the semantics of the involved entities and links the technical description, usually provided by existing metadata models, with the thematic description. In this way, a researcher, regardless of his/her expertise, can discover and, eventually, correctly reuse datasets of any discipline. Following the FAIR principles, the proposed metadata model reuses as much as possible existing models, ontologies and vocabularies.