Change Timestamp

[LePtitMetalleux]

Hi, I got theses data :
{ "timeStamp": 520, "src": [ { "x": 0.896, "y": 0.376, "z": 0.235, "E": 0.317 }, { "x": 0.990, "y": 0.073, "z": 0.117, "E": 0.116 }, { "x": 0.758, "y": 0.637, "z": 0.140, "E": 0.088 }, { "x": 0.819, "y": 0.335, "z": 0.465, "E": 0.000 } ] }
I would like to know if it's possible to change
"timeStamp": 520,
to
"timeStamp": currentDate,

Thanks in advance