curl --request GET \
  --url https://api.trysela.com/api/lead-types/ \
  --header 'Authorization: <api-key>'

{
  "count": 123,
  "next": "http://api.example.org/accounts/?page=4",
  "previous": "http://api.example.org/accounts/?page=2",
  "results": [
    {
      "count": 2,
      "next": null,
      "previous": null,
      "results": [
        {
          "id": 123,
          "name": "Refinance",
          "lead_metadata_fields": [
            {
              "key": "first_name",
              "label": "First Name",
              "helpText": "The lead's first name",
              "type": "string",
              "required": true
            },
            {
              "key": "loan_amount",
              "label": "Loan Amount",
              "helpText": "Requested loan amount",
              "type": "number",
              "required": false
            }
          ]
        }
      ]
    }
  ]
}