POST /RestApi/v1/Authentication/RequestToken HTTP/1.1
Host: hosted.datascopeapi.reuters.com
Accept: */*
Prefer: respond-async
Content-Type: application/json; odata=none
Content-Length: 80

{ "Credentials": { "Username":  "<our username>", "Password": "<our password>" } }

--- Server replies:

HTTP/1.1 200 OK
Set-Cookie: DSSAPI-COOKIE=R3479498792; path=/
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft-IIS/7.5
X-Request-Execution-Correlation-Id: 94e6105d-5981-4d04-8cfc-f7aaed6b19e3
X-App-Id: Custom.RestApi
X-App-Version: 11.0.492.64
Date: Fri, 16 Jun 2017 13:23:52 GMT
Content-Length: 403

{"@odata.context":"https://hosted.datascopeapi.reuters.com/RestApi/v1/$metadata#Edm.String","value":"_wRZWurwNK1qL4mSQxulsoKQHWOZIjbszJ1Q1JsP1TdVu7GNcY9yKgLRYyH-XQJsJKfZgTOwJN42HbZUgMK8Y-HAY7u3u11tzkzLpGBLx2oG9zShqgrNM7LDpBGGckrRtl_olKuols_h-30LSuLI4Q10RJOG-dx3njSqLNXLKBVavkpLKcqJ9YWd0hyKEAykF0eQX4RF-IvW5jyf7DGVwFccFIqg2xL8ZrsFUZ1xNixEzxMTZJQoy7qzrq3En5EEtv3NswtnOH6UWjHJX8Do0J2r1alJyCR2TidK_V6qb6dc"}

--- Client sends:

POST /RestApi/v1/Extractions/ExtractRaw HTTP/1.1
Host: hosted.datascopeapi.reuters.com
Cookie: DSSAPI-COOKIE=R3479498792
Authorization: Token <"_wRZWurwNK1qL4mSQxulsoKQHWOZIjbszJ1Q1JsP1TdVu7GNcY9yKgLRYyH-XQJsJKfZgTOwJN42HbZUgMK8Y-HAY7u3u11tzkzLpGBLx2oG9zShqgrNM7LDpBGGckrRtl_olKuols_h-30LSuLI4Q10RJOG-dx3njSqLNXLKBVavkpLKcqJ9YWd0hyKEAykF0eQX4RF-IvW5jyf7DGVwFccFIqg2xL8ZrsFUZ1xNixEzxMTZJQoy7qzrq3En5EEtv3NswtnOH6UWjHJX8Do0J2r1alJyCR2TidK_V6qb6dc">
Content-Type: application/json
Prefer: respond-async
Content-Length: 634

{
	"ExtractionRequest": {
		"@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.TickHistoryRawExtractionRequest",
		"ContentFieldNames": [ ],
		"IdentifierList": {
			"@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",
			"InstrumentIdentifiers": [
				{
				"Identifier": "EBAY.O",
				"IdentifierType": "Ric"
				}
			],
			"ValidationOptions": null,
			"UseUserPreferencesForValidationOptions": false
		},
		"Condition": {
			"MessageTimeStampIn": "GmtUtc",
			"ReportDateRangeType": "Range",
			"QueryStartDate": "2017-06-13T20:00:00.000Z",
			"QueryEndDate": "2017-06-13T23:59:59.999Z",
			"DisplaySourceRIC": true
		}
	}
}

--- Server replies:

HTTP/1.1 401 Unauthorized
Set-Cookie: DSSAPI-COOKIE=R3479498792; path=/
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft-IIS/7.5
WWW-Authenticate: Basic
X-Request-Execution-Correlation-Id: 05b64255-b308-4e18-9111-c2de8eccfc94
X-App-Id: Custom.RestApi
X-App-Version: 11.0.492.64
Date: Fri, 16 Jun 2017 13:46:10 GMT
Content-Length: 51

{"error":{"message":"Invalid Authorization Token"}}