Search for similar assets

This endpoint uses the newer, standard UUID format of 8-4-4-4-12, and letters are lowercase. See the example for assetIds, and Note on identifiers for more information. Additionally, only one of the search parameters (assetIds, imageUrl, imageData, textQuery) should be provided per request. Providing multiple parameters will result in a 400 Bad request response. Only OAuth2 authentication is supported for this endpoint, and permanent tokens are not accepted.