Attribute names with special characters are modified during JSON parsing and serialization

Summary

When parsing JSON with attributes containing special characters (e.g., [, ], or spaces), the attribute names are modified during serialization, resulting in changes to the original attribute names when the JSON is serialized back.

Steps to reproduce

1. Create a JSON object with attribute names containing special characters, such as:
   • "attribute[1]": "value"
   • "attribute name with spaces": "value"
   • "attribute]2[": "value"
2. Parse the JSON object into a Python object.
3. Serialize the Python object back to JSON.
4. Inspect the serialized JSON.

What is the current bug behavior?

• The attribute names with special characters change during the serialization and deserialization process.
• For example, the attribute "attribute 1" may be changed to "attribute1", causing the original structure to be lost.

What is the expected correct behavior?

• The attribute names containing special characters should remain unchanged during both the parsing and serialization processes.
• The serialized JSON should preserve the original attribute names exactly as they appeared in the input.

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