curl --request GET \
  --url https://api.lemlist.com/api/users/{userId} \
  --header 'Authorization: Basic <encoded-value>'

{
  "_id": "usr_QAucgYReK6EmMB3Cz",
  "email": "example@lemlist.co",
  "role": "admin",
  "linkedIn": {
    "status": true,
    "inviteLimit": 25,
    "sendLimit": 33,
    "visitLimit": 36
  },
  "mailboxes": [
    {
      "_id": "usm_bsdepN6jb8zftK9Ns",
      "email": "example@gmail.com",
      "provider": "google",
      "status": "ERROR",
      "lemlist": {
        "emailLimit": 50
      },
      "lemwarm": {
        "active": false
      }
    },
    {
      "_id": "usm_gPKrqoNxaXxScTpPh",
      "email": "example@outlook.com",
      "status": "ERROR",
      "lemlist": {
        "emailLimit": 50
      },
      "lemwarm": {
        "active": false
      }
    }
  ]
}