class_docstr: The main manifest object which gets written into the workflow archive as MANIFEST.json
code: def __str__(self):
      return json.dumps(self.manifest_dict, indent=2)
  
file_path: serve/workflow-archiver/workflow_archiver/manifest_components/manifest.py
imports: from datetime import datetime
  import json
  from workflow_archiver import __version__
label_desc: Use image node_id 3 for calling the Manifest obj's underlying member method code with example usage: obj.__str__() and returns: json