I'm developping a custom activity in NodeJS and I would like to know how can I get the name of the Data Extension I'm working with to put the name here :

    payload['arguments'].execute.inArguments = [{
                'campaignNameKey': campaignNameKey,
                'csvName': csvName,
                "Prenom": "{{Contact.Attribute.DE_NAME.Prenom}}",
                "Nom": "{{Contact.Attribute.DE_NAME.Nom}}",
                "Mobile": "{{Contact.Attribute.Contacts.Mobile}}",
                "Campagne": "{{Contact.Attribute.Contacts.Campagne}}",
                "stopSMS": "{{Contact.Attribute.Contacts.stopSMS}}"
            }];

For the moment, I'm using the name of my test Data Extension ("Contacts") but I would like to be able to use this payload on any Data Extension. Thanks !



EDIT : 


    

    {
    
    "trigger": {
        "id": {
            "a": "521ea773-aa99-4755-a596-1b47621bf78d",
            "b": null
        },
        "outcomes": {
            "a": []
        },
        "metaData": {
            "sourceInteractionId": {
                "a": "00000000-0000-0000-0000-000000000000"
            },
            "scheduleState": {
                "b": "No Schedule"
            }
        },
        "documentArguments": {
            "startActivityKey": {
                "a": "{{Context.StartActivityKey}}"
            },
            "dequeueReason": {
                "a": "{{Context.DequeueReason}}"
            },
            "lastExecutedActivityKey": {
                "a": "{{Context.LastExecutedActivityKey}}"
            },
            "filterResult": {
                "a": "true"
            },
            "serializedObjectType": {
                "b": 3
            },
            "eventDefinitionId": {
                "b": "eb788811-efee-41a2-8539-dd7cd3581808"
            },
            "eventDefinitionKey": {
                "b": "DEAudience-8a4ce4c8-028d-24ec-13bc-99c56d23e3b2"
            },
            "dataExtensionId": {
                "b": "78f14e04-7cb5-e711-80cf-1402ec819bf8"
            },
            "automationId": {
                "b": "48247447-ca70-443e-b390-ac70cc01a326"
            }
        },
        "schemaVersionId": {
            "a": 0
        },
        "configurationArguments": {
            "a": {
                "filterDefinitionId": "00000000-0000-0000-0000-000000000000"
            }
        },
        "eventDefinition": {
            "deUsageDataReturned": {
                "b": null
            }
        },
        "mode": {
            "b": "Production"
        },
        "isVisibleInPicker": {
            "b": false
        },
        "interactionCount": {
            "b": 2
        },
        "publishedInteractionCount": {
            "b": 0
        },
        "dataExtensionId": {
            "b": "78f14e04-7cb5-e711-80cf-1402ec819bf8"
        },
        "schema": {
            "b": null
        },
        "createdDate": {
            "b": "2018-06-11T05:43:36.180Z"
        },
        "createdBy": {
            "b": 100125031
        },
        "modifiedBy": {
            "b": 100125031
        },
        "dataExtensionName": {
            "b": "Contacts"
        },
        "sourceApplicationExtensionId": {
            "b": "a62ff9df-dc1c-4e9a-87cd-c05841d79f38"
        },
        "filterDefinitionTemplate": {
            "b": ""
        },
        "category": {
            "b": "Audience"
        },
        "automationId": {
            "b": "48247447-ca70-443e-b390-ac70cc01a326"
        },
        "scheduleFlowMode": {
            "b": "runOnce"
        },
        "runOnceScheduleMode": {
            "b": "onPublish"
        },
        "unconfigured": {
            "b": false
        },
        "_originalDeAudienceType": {
            "b": "EmailAudience"
        },
        "config": {
            "b": {
                "internal": true,
                "scheduleEnabled": true,
                "scheduleTile": true,
                "supportsAutomationSchedule": true,
                "configurableHighWatermark": true,
                "userInterfaces": {
                    "summary": [
                        {
                            "fieldName": "startDateTime",
                            "valuePath": "schedule.startDateTime",
                            "label": "Start",
                            "timezoneOffsetPath": "timezoneOffset",
                            "type": "date",
                            "momentFormat": "LLL"
                        },
                        {
                            "fieldName": "timeZone",
                            "valuePath": "schedule.timeZone",
                            "label": "Time Zone"
                        },
                        {
                            "fieldName": "frequency",
                            "valuePath": "schedule.frequency",
                            "label": "Repeat",
                            "valueInLang": true
                        },
                        {
                            "fieldName": "interval",
                            "valuePath": "schedule.interval",
                            "label": "Repeat Every"
                        },
                        {
                            "fieldName": "customDayOfTheWeek",
                            "valuePath": "schedule",
                            "label": "Day(s) of the Week"
                        },
                        {
                            "fieldName": "scheduledDay",
                            "valuePath": "schedule.scheduledDay",
                            "label": "Scheduled Day"
                        },
                        {
                            "fieldName": "scheduledDayOfWeek",
                            "valuePath": "schedule.scheduledDayOfWeek",
                            "label": "Scheduled Day of the Week",
                            "valueInLang": true
                        },
                        {
                            "fieldName": "scheduledMonth",
                            "valuePath": "schedule.scheduledMonth",
                            "label": "Scheduled Month",
                            "valueInLang": true
                        },
                        {
                            "fieldName": "scheduledWeek",
                            "valuePath": "schedule.scheduledWeek",
                            "label": "Scheduled Week",
                            "valueInLang": true
                        },
                        {
                            "fieldName": "endDateTime",
                            "valuePath": "schedule.endDateTime",
                            "label": "End",
                            "type": "date",
                            "momentFormat": "LL"
                        },
                        {
                            "fieldName": "occurrences",
                            "valuePath": "schedule.occurrences",
                            "label": "End"
                        },
                        {
                            "fieldName": "useHighWatermark",
                            "valuePath": "useHighWatermark",
                            "label": "Evaluate new records only"
                        },
                        {
                            "fieldName": "automationName",
                            "valuePath": "automation.name",
                            "label": "Automation Name"
                        },
                        {
                            "fieldName": "activityName",
                            "valuePath": "activityName",
                            "label": "Activity Name"
                        },
                        {
                            "fieldName": "deRecordCount",
                            "valuePath": "deRecordCount",
                            "label": "Record Count"
                        },
                        {
                            "fieldName": "fileTriggerActive",
                            "valuePath": "automation.fileTrigger.triggerActive",
                            "label": "File Trigger Active"
                        },
                        {
                            "fieldName": "fileTriggerFolder",
                            "valuePath": "automation.fileTrigger.folderLocationText",
                            "label": "File Trigger Directory"
                        },
                        {
                            "fieldName": "automationStatus",
                            "valuePath": "automation.status",
                            "label": "Automation Status"
                        }
                    ]
                },
                "lang": {
                    "en-US": {
                        "never": "Never",
                        "hourly": "Hourly",
                        "daily": "Daily",
                        "weekly": "Weekly",
                        "monthly": "Monthly",
                        "yearly": "Yearly",
                        "sunday": "Sunday",
                        "monday": "Monday",
                        "tuesday": "Tuesday",
                        "wednesday": "Wednesday",
                        "thursday": "Thursday",
                        "friday": "Friday",
                        "saturday": "Saturday",
                        "First": "First",
                        "Second": "Second",
                        "Third": "Third",
                        "Fourth": "Fourth",
                        "Last": "Last",
                        "January": "January",
                        "February": "February",
                        "March": "March",
                        "April": "April",
                        "May": "May",
                        "June": "June",
                        "July": "July",
                        "August": "August",
                        "September": "September",
                        "October": "October",
                        "November": "November",
                        "December": "December",
                        "true": "Scheduled",
                        "00:00": "00:00",
                        "01:00": "01:00",
                        "02:00": "02:00",
                        "03:00": "03:00",
                        "04:00": "04:00",
                        "05:00": "05:00",
                        "06:00": "06:00",
                        "07:00": "07:00",
                        "08:00": "08:00",
                        "09:00": "09:00",
                        "10:00": "10:00",
                        "11:00": "11:00",
                        "12:00": "12:00",
                        "13:00": "13:00",
                        "14:00": "14:00",
                        "15:00": "15:00",
                        "16:00": "16:00",
                        "17:00": "17:00",
                        "18:00": "18:00",
                        "19:00": "19:00",
                        "20:00": "20:00",
                        "21:00": "21:00",
                        "22:00": "22:00",
                        "23:00": "23:00"
                    }
                },
                "entrySourceGroupConfigUrl": "jb:///data/entry/audience/"
            }
        },
        "automation": {
            "b": {
                "id": "48247447-ca70-443e-b390-ac70cc01a326",
                "name": "Test Activity Custom - 2018-06-11T074336.133",
                "description": "Event Definition Automation",
                "key": "10ed873f-26ab-47ac-a604-46e27c1fdfea",
                "typeId": 1,
                "type": "scheduled",
                "statusId": 2,
                "status": "Ready",
                "categoryId": 11229,
                "lastRunTime": "2018-06-18T08:04:27.667",
                "lastRunInstanceId": "a366f85c-6ab0-428c-8481-e0c7b6e7eaa9",
                "schedule": {
                    "scheduleStatus": "none"
                },
                "steps": [
                    {
                        "id": "5ea1a729-74dc-4652-9941-0847291f5279",
                        "name": "",
                        "description": "",
                        "step": 1,
                        "activities": [
                            {
                                "id": "a6a1cdd8-60f0-41f5-9204-3994e29731bf",
                                "name": "Contacts",
                                "activityObjectId": "eb788811-efee-41a2-8539-dd7cd3581808",
                                "objectTypeId": 952,
                                "displayOrder": 1
                            }
                        ]
                    }
                ]
            }
        },
        "deRecordCount": {
            "b": 4
        },
        "deUsageDataReturned": {
            "b": null
        }
    },
    "mobileNumber": {
        "0": {
            "a": "{{Event.DEAudience-8a4ce4c8-028d-24ec-13bc-99c56d23e3b2.\"Mobile\"}}"
        }
    }
    }