using System.Threading.Tasks;
static async Task Main(string[] args)
var data = new StringContent("{ \"cellphone\": \"53992018506\", \"cpf\": \"02237702055\", \"dateBirth\": \"07/10/1989\", \"mail\": \"boemekeld@gmail.com\", \"name\": \"Lucas Boemeke\", \"patientHolderId\": 0, \"sex\": \"MALE\" }", Encoding.UTF8, "application/json");
var url = "https://sandbox.conexasaude.com.br/api/integration/enterprise/patients";
using var client = new HttpClient();
client.DefaultRequestHeaders.Add("token", "61f0ede41d9952e69959f8294dac6b0c2");
var response = await client.PostAsync(url, data);
string result = response.Content.ReadAsStringAsync().Result;
Console.WriteLine(result);