In JSON format where/how do you add an annotation?

I create .json files directly from a Java program. I am finding it difficult to understand where to put some of the json notations and what format to use.

I can’t figure out how to add an annotation to a JSON chart.

Here is a simple plot.json chart w/out any annotations:

“data”: [
“name”: “My 1st Data set name”,
“type”: “scatter”,
“x”: [1.0, 2.0, 3.0, 4.0],
“y”: [1.0, 4.0, 2.0, 3.0],
“mode”: “lines+markers”
“name”: “My 2nd Data set name”,
“type”: “scatter”,
“x”: [1.0, 2.0, 3.0, 4.0],
“y”: [3.0, 1.0, 3.0, 4.0],
“mode”: “markers”
“layout”: {
“title”: {
“text”: “Layout Title”

When I run this through orca “orca graph plot.json” I get the attached png:

If I wanted to add an annotation to the JSON chart such as:

“annotation”: {
“text”=“My annotation”,

Where would I add the above text… No matter where I put it, it does not add an annotation to the chart. orca won’t even parse the json file I think. I can’t tell if my JSON above for the annotation is incorrect (i.e. won’t parse) or where I place the above in my plot.json file is incorrect (i.e. won’t parse because of the location I added the code).

I have tried placing it inside layout and outside layout. I made sure the commas are corrected on the previous lines when I added the above because the JSON format is super finicky about commas.

I put this question at the top level because there is no JSON category.

Thanks in advance!