When I render a page using the Django template renderer, I can pass in a dictionary variable containing various values to manipulate them in the page using {{ myVar }}
For a JavaScript object stored in a Django field as text, which needs to again become a JavaScript object dynamically inserted into on-page script, you need to use both escapejs and JSON.parse():
var CropOpts = JSON.parse("{{ profile.last_crop_coords|escapejs }}");
Django's escapejs handles the quoting properly, and JSON.parse() converts the string back into a JS object.