Simple field json

[joecorall]

Link to Github issue or other discussion

Replace this text - Provide links to any Github issues or other discussions that are related to this work.

What does this PR do?

Replace this text - Explain the purpose/justification of this PR.

What changes were made?

Replace this text - State clearly the direct additions or modifications made in this pull request.

How to test / verify this PR?

Replace this text - Document how to test this PR, and the details that help a reviewer verify the documentation. Include .yml configuration files and CSV data if possible. Unit or integration tests are also appreciated.

Interested Parties

Replace this text - name some folks who may be interested, or, if unsure, @mjordan

---

Checklist

• Before opening this PR, have you opened an issue explaining what you want to to do?
• Have you included some configuration and/or CSV files useful for testing this PR?
• Have you written unit or integration tests if applicable?
• Does the code added in this PR require a version of Python that is higher than the current minimum version?
• If the changes in this PR require an additional Python library, have you included it in setup.py?
• If the changes in this PR add a new configuration option, have you provided a default for when the option is not present in the .yml file?