Create Session

curl --request POST \
  --url https://api.authsignal.com/v1/sessions \
  --header 'Content-Type: application/json' \
  --data '{
  "token": "eyJhbGciOiJ...",
  "clientId": "64818035-68c3-4087-a449-bdd176a166c4"
}'

{
  "accessToken": "<string>",
  "refreshToken": "<string>"
}