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POST /interaction/v1/events

Fires the entry event that initiates the journey. If you use UTF-8 characters in a payload for the Rest API, change the Content-Type header to: application/json; charset=UTF-8.

ContactKeystringRequiredThe ID that uniquely identifies a subscriber or a contact
EventDefinitionKeystringRequiredFind the EventDefinitionKey in Event Administration after the event is created and saved. The EventDefinitionKey is present for both standard and custom events. Don’t include a period in the EventDefinitionKey.
DataobjectProperties of the event. Only required if defined in a custom event or by the event.
 eventInstanceIdGUID formatted stringThe ID of the entry event. This field name is reserved for system use. If you have a field in your payload with the same name, the data value for it is ignored, and a random GUID is logged to the data extension.