curl https://api.thanxsandbox.com/partner/reward_templates/abc123def456?merchant_id={merchant_id} \
  -X GET \
  -H 'X-ClientId: {client_id}' \
  -H 'Accept-Version: v4.0' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer {access_token}'

{
  "reward_template": {
    "id": "abc123def456",
    "name": "Free Coffee",
    "type": "discount",
    "subtype": "free_item",
    "description": "One free coffee, any size",
    "fine_print": "Valid at participating locations",
    "discount": {
      "type": "free_item",
      "value": null
    },
    "redemption_venue": "in_store",
    "images": {
      "small": "https://images.thanx.com/reward_template_small.png",
      "large": "https://images.thanx.com/reward_template_large.png"
    }
  }
}