curl --request POST \
  --url https://{your-domain}/wp-json/jwt-auth/v1/token/refresh \
  --header 'Content-Type: application/json' \
  --data '
{
  "refresh_token": "<string>"
}
'

{
  "token": "<string>",
  "user_id": 123,
  "user_email": "<string>",
  "user_nicename": "<string>",
  "user_display_name": "<string>",
  "refresh_token": "<string>"
}