curl --request GET \
  --url https://api.g-tateth.com/api/v1/customers/{id} \
  --header 'Authorization: <api-key>'

{
  "success": true,
  "data": {
    "_id": "<string>",
    "profile": {
      "firstName": "<string>",
      "lastName": "<string>",
      "email": "<string>",
      "phone": "<string>"
    },
    "tier": "bronze",
    "status": "active",
    "tags": [
      "<string>"
    ]
  }
}