App systems: array instances: array
System id: string name: string description: string parameters: {id: Parameter} relations: {id: Relation} initialState: Status
Parameter id: string name: string description: string min: number max: number
Relation id: string name: string description: string domainId: string codomainId: string type: string effect: array
Instance systemId: string history: array
Status {parameterId: value}