json4.json

{
    "$schema":  "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion":  "1.0.1.0",
    "parameters":  {
                       "firstArray":  {
                                          "type":  "array",
                                          "defaultValue":  [
                                                               "1-1",
                                                               "1-2",
                                                               "1-3"
                                                           ]
                                      },
                       "secondArray":  {
                                           "type":  "array",
                                           "defaultValue":  [
                                                                "2-1",
                                                                "2-2",
                                                                "2-3"
                                                            ]
                                       }
                   },
    "resources":  [

                  ],
    "outputs":  {
                    "return":  {
                                   "type":  "array",
                                   "value":  "[concat(parameters(\u0027firstArray\u0027), parameters(\u0027secondArray\u0027))]"
                               }
                }
}