Get the correct value for datatype

[WillianGoncalves]

We should get the datatype value from ui_data_type entity.

                  "entities": [
                    {
                      "entity": "ui_property",
                      "value": "datatype",
                      "string": "tipo de dado",                     
                    },
                    {
                      "entity": "ui_data_type",
                      "value": "string",
                      "string": "texto",
                    }
                  ],