SDMX basic structure

header :    - id::String
            - test::Bool
            - prepared::String # Date
            - sender::Dict

dataSets::Vector :  - action::String
                    - validFrom::String # Date
                oneof
                    - observations::Dict # if flat file
                    or
                    - series::Dict : # if series file
                        - attributes
                        - observations
strucuture: - links::Vector
            - name::String
            - dimensiones::Dict
                oneof
                - observation  # if flat file
                or
                - series # if series file
                - observation
            - attributes::Dict
        