{"oneOf": [{"enum": ["${variables.VARIABLE_NAME}", "${text(ACTIVITY_ID.outputs.message.message)}", "${event.args.NAME}", "<mention uid='${ACTIVITY_ID.outputs.user.userSystemInfo.id}'/>", "<mention uid='${event.initiator.user.userId}'/>"]}, {"oneOf": [{"required": ["template"]}, {"required": ["template-path"]}], "type": "object", "properties": {"template": {"minLength": 1, "type": "string"}, "template-path": {"minLength": 1, "type": "string"}}}, {"minLength": 0, "type": "string"}]}