API Tester returns bad request

[MartinC966]

I'm using this testing a post request on the api tester and it return a 400 bad request.

{

   "lists":[{"id": "1712653224"}], 

  "email_addresses":[{"email_address":"janedoe@doe.com"}],

"last_name":"Doe","first_name":"Jane"}

[Jimmy_D]

Hello @MartinC966,

Thank you for reaching out to Constant Contact's API Support.

If you are making a POST then the JSON data format is correct and I would look in to either your header information or how you have your endpoint URL formatted.