curl -X POST 'https://crypto-api.yativo.com/api/authentication/login' \
  -H 'Content-Type: application/json' \
  -d '{
    "email": "user@example.com",
    "password": "securepassword123"
  }'

{
  "status": "success",
  "message": "Login successful",
  "data": {
    "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
    "refresh_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
    "user": {
      "id": "usr_01HX9KZMB3F7VNQP8R2WDGT4E5",
      "email": "user@example.com",
      "username": "cryptouser",
      "first_name": "Jane",
      "last_name": "Doe"
    }
  }
}