Thanks for your response,
I'm not a begginer in backend, just in REST security.
I'm not agree with user sessions :
RESTful:
One can characterise applications conforming to the REST constraints described in this section as "RESTful".[15] If a service violates any of the required constraints, it cannot be considered RESTful.
stateless constraint:
We next add a constraint to the client-server interaction: communication must be stateless in nature, as in the client-stateless-server (CSS) style of Section 3.4.3 (Figure 5-3), such that each request from client to server must contain all of the information necessary to understand the request, and cannot take advantage of any stored context on the server. Session state is therefore kept entirely on the client.
I'm just a begginer with all term of security : OAuth, JWT... and don't find a simple way to implement it.