用结构体写json格式写出四组数组名分别是source，type，model，UID

以下是用结构体写json格式的四组数组名：

{
"source": [
"CSDN",
"Google",
"Baidu",
"Microsoft"
],
"type": [
"Web",
"Mobile",
"Desktop",
"Embedded"
],
"model": [
"Supervised",
"Unsupervised",
"Reinforcement",
"Deep Learning"
],
"UID": [
"123456",
"789012",
"345678",
"901234"
]
}