curl --request GET \
  --url https://api.nomos.energy/suppliers \
  --header 'Authorization: Bearer <token>'

{
  "object": "list",
  "items": [
    {
      "object": "supplier",
      "id": "mp_a0x6jm5h92wde6s5dnuvha4c",
      "name": "Nomos Friends & Family",
      "country": "DE",
      "created_at": "2021-01-01T00:00:00.000Z",
      "code": "9903964000002",
      "code_type": "BDEW"
    }
  ]
}