request.go

type Params struct {
    AccountID  int    `json:"accountID"`
    Name       string `json:"name"`
    TotalSize  int    `json:"totalSize"`
}

type OtherParams struct {
    GroupID int `json:"groupID"`
    GroupName string `json:"groupName"
}

type Request struct {
    Method string `json:"method"`
    Id     int    `json:"id"`
    Params Params `json:"params"` // Would like to use Params|OtherParams|... ; can I use an interface?
}