question

This is likely just my ignorance of javascript but wanted to see if someone could help with the correct way to upload a file to playfab once the upload url is received. I am using javascript SDK in Construct 3.

The below will successfully use the InitiateFileUploads api to receive a response with an upload url. I am already logged in and getting the appropriate entityId / type and passing it in. I would like now to do a put using that url to upload sample data which I call DataTest below into an entity file on playfab.

What is the proper way to do this in javascript? Does it need to be encoded? I am attempting to use fetch in an async function but am I simply approaching it incorrectly? Any help is appreciated!

Also, I was able to get their setObjects api working correctly which could also be used to store small sets of data as demo'd below but I am interested in storing larger amounts of information which requires the use of an entity file.

The closest documentation on playfab is below under the entity files section:

api.playfab.com/docs/tutorials/entities/getting-started-entities

//InitiateFileUploads
//https://api.playfab.com/documentation/Data/method/InitiateFileUploads
function PF_InitiateFileUploads(f_EntityId,f_EntityType,f_EntityTypeString,mapData){

	var request = {
		"FileNames": [
			"mapData"
		],
		"Entity": {
			"Id": f_EntityId,
			"Type": f_EntityType,
			"TypeString": f_EntityTypeString
		}
	}

	PlayFabDataSDK.InitiateFileUploads(request,onInitiateFileUploadsResponse);
}
function onInitiateFileUploadsResponse(response, error) {
	//console.log(gMapData);
	var uploadURL;
	var DataTest={
		posX: 45,
		posY: 23
	};

	if (response !== null) {
		console.log("InitiateFileUploads response received")
		console.log("InitiateFileUploads response: " + JSON.stringify(response));

		uploadURL = response.data.UploadDetails.UploadUrl;

		loadFile(uploadURL,DataTest)

	} else if (error !== null) {
		console.log("InitiateFileUploads error received")
		console.log("InitiateFileUploads error: " + JSON.stringify(error));

	}
}

async function loadFile(uploadURL,data){
	var payload = data;
	var otherParam={
		headers:{
			"content-type":"application/json; charset=UTF-8"
		},
		body:payload,
		method:"PUT"
	};
	const response = await fetch(uploadURL,otherParam);
	const jsonData = await response.json(); 

}