Client-side element usage: 1. Drag 'JSON Merge Fields' element onto the page and ensure it is visible
2. Set element properties (JSON, input string, tag format)
3. Access output from the element's 'output' state

Client-side workflow usage:
1. Ensure the 'JSON Merge Fields' element is on the page and visible
2. Add a 'Merge fields from JSON' workflow action
2. Set workflow properties (JSON, input string, tag format)
3. Access output from the element's 'workflow output' state

Server-side workflow usage:
1. Add a 'Merge fields from JSON (SSA)' workflow action
2. Set workflow properties (JSON, input string, tag format)
3. Access output from the workflow action's 'Result of step X's output' state