How to HTTP POST API Request Json Format

Hello,

I order to go for a subscription I need to understand if it is possible to make this kind of POST request to a local intranet server.

In the information of the API I should send this JSON Format body:

I make the request working with PostMan but no way to understand how to do it with Wappler.

Method: POST
URI: http://localhost:8081/wms/rest/missions?&sessiontoken=uAzDPqMRPfEhg05X3ajXsw%3D%3D
Data:
{
“missionrequest”: {
“requestor”: “jean”,
“missiontype”: “0”,
“fromnode”: “S1-Pick”,
“tonode”: “Station 1”,
“cardinality”: “1”,
“priority”: 0,
“deadline”: “2015-02-25T12:27:41.043Z”,
“dispatchtime”: “2015-02-25T12:27:41.043Z”,
“parameters”: {
“value”: {
“payload”: “Something”
},
“desc”: “Mission extension”,
“type”: “org.json.JSONObject”,
“name”: “parameters”
}
}
}

Any help?

Thanks in advance.