curl --request POST \
  --url http://api.local.stratumn.com:3000/v2/login/credential \
  --header 'Content-Type: application/json' \
  --data '
{
  "email": "<string>",
  "password": "<string>"
}
'

{
  "error": "<unknown>",
  "data": {
    "token": "<string>"
  }
}