updateUserTier(
  level: Int!
  name: String
  point: Float
  svg: String
): Tier

{
  "data": {
    "updateUserTier": {
      "level": 1,
      "name": "Elite Bronze",
      "point": 1000,
      "svg": "<svg>...</svg>"
    }
  }
}

// Fetch current tier configuration
const { data: currentTiers } = await client.query({
  query: gql`
    query GetTiers {
      getUserTiers {
        level
        name
        point
      }
    }
  `
});

// Validate new point value
const validatePointUpdate = (level: number, newPoint: number) => {
  const sortedTiers = currentTiers.getUserTiers.sort(
    (a, b) => a.level - b.level
  );

  const prevTier = sortedTiers.find(t => t.level === level - 1);
  const nextTier = sortedTiers.find(t => t.level === level + 1);

  if (prevTier && newPoint <= prevTier.point) {
    throw new Error(`Point value must be greater than ${prevTier.name} (${prevTier.point})`);
  }

  if (nextTier && newPoint >= nextTier.point) {
    throw new Error(`Point value must be less than ${nextTier.name} (${nextTier.point})`);
  }

  return true;
};

// Update tier with validation
try {
  validatePointUpdate(2, 6000);

  const { data } = await client.mutate({
    mutation: gql`
      mutation UpdateTier($level: Int!, $point: Float) {
        updateUserTier(level: $level, point: $point) {
          level
          name
          point
        }
      }
    `,
    variables: {
      level: 2,
      point: 6000
    }
  });

  console.log(`Updated tier: ${data.updateUserTier.name} to ${data.updateUserTier.point} points`);
} catch (error) {
  console.error('Update failed:', error.message);
}