Provide the datamodel structure of document

[slamer59]

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Is your feature request related to a problem? Please describe. There is no problem.

Describe the solution you'd like Provide a jsond or any equivalent format to understand the datamodel and extend it if necessary.

Describe alternatives you've considered Reverse engeneering of the json output examples: https://github.com/axa-group/Parsr/blob/master/docs/json-output.md

Thanks for this work :)