There are a few different metadata standards used in Cardano. The main one used is CIP-25. Below is an example of what the metadata format should look like:

If you need more information on the different metadata standards in Cardano, please refer to the following links:

If you would like to learn more about the CIP-25 metadata standard, head on over to cardano.org

If you would like to learn more about the CIP-68 metadata standard, head on over to cardano.org