curl --request POST \
  --url https://api.jelou.ai/v1/widget/user \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "user": {
    "id": "<string>",
    "names": "<string>",
    "legalId": "<string>"
  }
}
'

{
  "message": "<string>",
  "statusMessage": "<string>",
  "status": 123,
  "error": {
    "code": "<string>",
    "key": "<string>",
    "description": "<string>",
    "developerMessages": {},
    "clientMessages": {}
  },
  "validationError": {}
}