Highchart JSON with a key `highchart` with a string value which we eval and take as the payload

highchart-with-highchart-key-and-string-value.json

{
"highchart": "{\"chart\":{\"style\":{\"color\":\"#b9bbbb\"}},\"series\":[{\"color\":\"#108ec5\",\"name\":\"New York\",\"data\":[17,22,24.8,24.1,20.1,14.1,8.6,2.5]},{\"color\":\"#52b238\",\"name\":\"Berlin\",\"data\":[13.5,17,18.6,17.9,14.3,9,3.9,1]},{\"color\":\"#ee5728\",\"name\":\"London\",\"data\":[11.9,15.2,17,16.6,14.2,10.3,6.6,4.8]}]}"
}