User: it is the account of a person attached to an organization
Organization: this is the company to which the
Project: it is the combination of an interface, a dataset, a
participants, quality parameters, and potentially a model
ProjectUser: it is the participant in a project with a defined role
Tool: it is a component of the interface. The interface is composed of
Asset: this is the image or document to be annotated
Label: it is the set of annotations made on an asset.