Map should be retrievable as JSON
According to documentation:
Using the .json extension explicitely returns a serialized JSON file for direct use with Leaflet:
curl -H 'Accept: application/api+json;version=0' \ -H 'Authorization: Token 23d8009f-f2ec-44b6-bcbe-58ad1d3af10b' \ https://api.incommon.cc/maps/51895a0-6580-4b0a-9d78-8fcd896aec88.json
See #24.