{
  ":a": {
    "L": [
      {
        "M": {
          "street": {"S": "Planet"},
          "number": {"N": "12"},
          "country": {"S": "Milky Way"}}},
      {
        "M": {
          "street": {"S": "Cosmic"},
          "number": {"N": "32"},
          "country": {"S": "Milky Way"}}},
      {
        "M": {
          "street": {"S": "Saturn"},
          "number": {"N": "13"},
          "country": {"S": "Andromeda"}}}]},
  ":k": {
    "L": [
      {"S": "Jane"},
      {"S": "Peter"},
      {"S": "Lucy"},
      {"S": "Andy"}]
  }
}