Field name does not match with Json Importer format

[Ashwin N S]

Hi Team, I'm in middle of a migration activity from our internal tool to our on-prem JIRA instance. The problem i'm facing is with System Fields file watcher/Affects Versions and some other.

I'm fetching all fields using "jira.get_all_fields()" from the python package and making a dictionary of custom and system fields. Now the issues is which attribute will help me to create a importable JSON object? 

For eg: Affected Version
JSON File requires name: "affectedVersions"

API Response result looks like following:

{'clauseNames': ['affectedVersion'],
'custom': False,
'id': 'versions',
'name': 'Affects Version/s',
'navigable': True,
'orderable': True,
'schema': {'items': 'version', 'system': 'versions', 'type': 'array'},
'searchable': True}

There are some other fields also like this. Where can i find  affectedVersions as a field name against display name in UI ?