curl --request POST \
  --url https://api.crevio.co/v1/customers \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "customer": {
    "email": "jsmith@example.com",
    "name": "<string>",
    "firstName": "<string>",
    "lastName": "<string>",
    "customerType": "lead"
  }
}
'

{
  "id": 123,
  "email": "jsmith@example.com",
  "name": "<string>",
  "firstName": "<string>",
  "lastName": "<string>",
  "customerType": "lead",
  "prefixId": "<string>",
  "ordersCount": 123,
  "totalSpend": 123,
  "tags": [
    {
      "id": 123,
      "name": "<string>"
    }
  ],
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z"
}