code: def decode_jwt(encoded_token, secret, algorithm, identity_claim_key,
                 user_claims_key):
      
      # This call verifies the ext, iat, and nbf claims
      data = jwt.decode(encoded_token, secret, algorithms=[algorithm])
  
      # Make sure that any custom claims we expect in the token are present
      if 'jti' not in data:
          raise JWTDecodeError("Missing claim: jti")
      if identity_claim_key not in data:
          raise JWTDecodeError("Missing claim: {}".format(identity_claim_key))
      if 'type' not in data or data['type'] not in ('refresh', 'access'):
          raise JWTDecodeError("Missing or invalid claim: type")
      if user_claims_key not in data:
          data[user_claims_key] = {}
  
      return data
docs: Decodes an encoded JWT
  
      :param encoded_token: The encoded JWT string to decode
      :param secret: Secret key used to encode the JWT
      :param algorithm: Algorithm used to encode the JWT
      :param identity_claim_key: expected key that contains the identity
      :param user_claims_key: expected key that contains the user claims
      :return: Dictionary containing contents of the JWT