Is it possible to create new sign_in without logging out already authenticated account? on rails api

Question

I created rails API and used devise and devise-jwt for authentication. I have problem as below

• I sign in using api on postman using account "A" and it gives me bearer token
• I again sign in using api on postman using account "B" without logging out previous account. it also give me another bearer token but this token belongs to "A" instead of "B"

So my question is, is this intended feature or I did mistake on configuration? I do have vague idea why it did this, because "A" is already authenticated it does not create new sign in for "B". Is it possible to create new sign_in without logging out already authenticated account?