Remplacer un participant par un contact existant

QUERY https://staging-api.docage.com/Contacts
Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9…
Content-Type: application/json

{ "Filter": { "PropertyName": "Email", "Comparison": "=", "Value": "camille.martin@example.com" }, "Take": 2, "EntityProperties": ["Id", "Name"] }

curl -X QUERY "https://staging-api.docage.com/Contacts" \
  -H "Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9…" \
  -H "Content-Type: application/json" \
  -d '{
    "Filter": {"PropertyName": "Email", "Comparison": "=", "Value": "camille.martin@example.com"},
    "Take": 2,
    "EntityProperties": ["Id", "Name"]
  }'

using HttpClient client = new();
using HttpRequestMessage request = new(new HttpMethod("QUERY"), "https://staging-api.docage.com/Contacts");
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token);
request.Content = new StringContent("""
    {
      "Filter": {
        "PropertyName": "Email",
        "Comparison": "=",
        "Value": "camille.martin@example.com"
      },
      "Take": 2,
      "EntityProperties": [
        "Id",
        "Name"
      ]
    }
    """, Encoding.UTF8, "application/json");
using HttpResponseMessage response = await client.SendAsync(request);
string result = await response.Content.ReadAsStringAsync();
if (!response.IsSuccessStatusCode)
    throw new HttpRequestException(result);

const response = await fetch("https://staging-api.docage.com/Contacts", {
  method: "QUERY",
  headers: {
    Authorization: `Bearer ${token}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "Filter": {"PropertyName": "Email", "Comparison": "=", "Value": "camille.martin@example.com"},
    "Take": 2,
    "EntityProperties": ["Id", "Name"]
  })
});
const text = await response.text();
if (!response.ok) throw new Error(text);
const result = text ? JSON.parse(text) : null;

curl -X POST "https://staging-api.docage.com/Transactions/CreateFullTransaction" \
  -H "Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9…" \
  -F "TemplateId=aaaaaaaa-0000-4000-8000-000000000001" \
  -F "Client=00000000-0000-4000-8000-000000000201"