{"fields": [{"name": "Tipo", "type": "number", "format": "default", "constraints": {"required": true}, "description": "Código de la renta"}, {"name": "Desc_ Renta", "type": "string", "format": "default", "constraints": {"required": true}, "description": "Nombre de la renta"}, {"name": "Desc_ Edad", "type": "string", "format": "default", "constraints": {"required": true}, "description": "Rango de edad de la cartera"}, {"name": "Cant_ Ctto", "type": "number", "format": "default", "constraints": {"required": true}, "description": "Cantidad de cuentas contrato relacionadas"}, {"name": "Valor", "type": "number", "format": "default", "constraints": {"required": true}, "description": "Valor de la cartera"}, {"name": "Mes Corte", "type": "string", "format": "default", "constraints": {"required": true}, "description": "Mes del corte de la información de cartera"}]}