54008: Invalid JSON

The specified 'Data' parameter is not valid JSON.

• The data you submitted is not JSON, or
• A missing or poorly-encoded character makes your JSON fail to parse.
• You crafted the HTTP request yourself, and did not percent-encode the submitted JSON data in the form parameters.

• Use a tool like JSONLint to check the data you're sending for syntax errors.
• If you're crafting HTTP requests yourself, make sure all form data is percent-encoded.