How to create a POST payload from a slice

Creating payload for the array,POST API call.

pipeline   []struct {
        Test string `json:"$Test"`
    } `json:"pipeline"`

JSON example

{

    "pipeline": [
      {
        "$Test": "test"
      }

    ]
}

For the above struct want to create a POST call request payload like the above JSON structure. I tried different options, but it's not working. What would be the right syntax?

You can try the following code

package main

import (
    "encoding/json"
    "fmt"
)

type TestInt struct{
    Test string `json:"$Test"`
}
type Payload struct{
    PipeLine []TestInt `json:"pipeline"`
}

func main() {
    pl:=Payload{
        PipeLine: []TestInt{
            {
                Test:"test",
            },
            
        },
    }
    js,_:=json.Marshal(pl)
    fmt.Println(string(js))
}

See Working link