将具有JSON数组的JSON对象解组到结构中

I want to unmarshal an array of json object into a struct. Each json object has a json array for one of the properties. If the property is defined as a string, works. If it's defined as an array of byte or string, I get an error.

I have tried a number of approaches but keep getting an error.

panic: ERROR: json: cannot unmarshal string into Go struct field 
.productlist of type []string

Source file:

{
  "orgs": [
    {
      "orgname": "Test Organization 26",
      "orgs_id": 26,
      "contactdate": "2019-12-12",
      "sincedate": "2019-12-12",
      "estusers": null,
      "estvehicles": null,
      "paidusers": null,
      "paythreshold": null,
      "productlist": "[\"SDCC\",\"JOB_CARDS\",\"ALLOCATIONS\"]",
      "roles": "[\"DISPATCH\",\"DRIVERS\",\"MECHANICS\"]"
    }
  ]
}

Go Struct:

type OrgsJSONData struct {
    Orgs []struct {
        Orgname      string      `json:"orgname"`
        OrgsID       int         `json:"orgs_id"`
        Contactdate  string      `json:"contactdate"`
        Sincedate    string      `json:"sincedate"`
        Estusers     interface{} `json:"estusers"`
        Estvehicles  interface{} `json:"estvehicles"`
        Paidusers    interface{} `json:"paidusers"`
        Paythreshold interface{} `json:"paythreshold"`
        Productlist  []string    `json:"productlist"`
        Roles        string      `json:"roles"`
    } `json:"orgs"`
}

Code:

    var orgsJSONData OrgsJSONData
    tmp := []byte(strings.Join(JsonData, ""))
    err := json.Unmarshal(tmp, &orgsJSONData)
    if err != nil {
        panic("ERROR: " + err.Error())
    }

If the productlist property is a string, the unmarshal works. If it is any other slice or array, I get the error "panic: ERROR: json: cannot unmarshal string into Go struct field .productlist of type []string" What am I doing wrong. P.S. Very new to Golang (Week 2 and learning)

The productlist field in the JSON input is a string, not an array:

"productlist": "[\"SDCC\",\"JOB_CARDS\",\"ALLOCATIONS\"]"

Note that the contents of it are quoted, and enclosed quotes are escaped. This is a string, not an array.

If it was an array, it would have been:

"productlist": ["SDCC","JOB_CARDS","ALLOCATIONS"]