curl --request GET \
  --url https://api.pocketflows.com/rewards_programs/{id}/tiers \
  --header 'Authorization: Basic <encoded-value>'

{
  "tiers": [
    {
      "id": "<string>",
      "name": "<string>",
      "minimum_points": 123,
      "associated_color": "<string>",
      "perks": [
        {
          "id": "<string>",
          "perk_type": "<string>",
          "description": "<string>",
          "title": "<string>",
          "mariana_tek_icon": "<string>"
        }
      ]
    }
  ]
}