{
  periods: [
    {
      "patterns": [
        {
          type: "daily",
          mode: "add",
          data: {
            days: [0],
            times: [
              {
                from: "9:00",
                to: "12:00",
              },
              {
                from: "13:00",
                to: "20:00",
              }
            ]
          }
        },
        {
          type: "daily",
          mode: "add",
          data: {
            days: [1],
            times: [
              {
                from: "9:00",
                to: "12:00",
              },
              {
                from: "13:00",
                to: "20:00",
              }
            ]
          }
        },
        //...
        {
          type: "daily",
          mode: "add",
          data: {
            days: [6],
            times: [
              {
                from: "9:00",
                to: "12:00",
              },
              {
                from: "13:00",
                to: "20:00",
              }
            ]
          }
        },
        // exceptions
        {
          type: "day",
          mode: "subtract",
          data: {
            date: "2019-09-12"
          }
        }
      ]
    }
  ]
}