Defaults to { "name": "replace with the name of the segment", "description": "replace with description", "broadcastMediumId": "replace with broadcast medium Id", "segmentType":"replace with segment type", "tagId": "Replace with the tag Id", "filters": [], "persons": [ { "substitutionTags": [{"tag": "replace with name of the tag","value": "replace with value of the tag"}], "externalId": "replace with uuid", "firstName": "replace with first name", "lastName": "replace with last name", "phone": "replace with phone number", "email": "replace with email" } ] }