怎么用表达式引用词典数据快速生成多级json数据？

从：

{
  "到手单价_1": 188.0,
  "实付总价_1": 188.0,
  "可省金额_1": 188.0,
  "到手单价_2": 188.0,
  "实付总价_2": 188.0,
  "可省金额_2": 188.0,
  "到手单价_3": 188.0,
  "实付总价_3": 188.0,
  "可省金额_3": 188.0,
  "最优项": 188.0,
  "最优均价": 188.0
}

到：

{
"数据":[
{"name":"第1件","到手单价":"188.0","实付总价":"188.0","可省金额":"188.0"},
{"name":"第2件","到手单价":"188.0","实付总价":"188.0","可省金额":"188.0"},
{"name":"第3件","到手单价":"188.0","实付总价":"188.0","可省金额":"188.0"}],
"最优":[
"最优项":"188.0","最优均价":"188.0","最优惠金额":"188.0"}]
}