Error when creating attempting to insert dandiset metadata

[jjnesbitt]

I ran into this when trying to add the metadata for dandiset 000004 (converted to JSON). When making the request to PUT ​/dandisets​/{dandiset__pk}​/versions​/{version}​/, I get the following response:

OperationalError at /api/dandisets/000004/versions/draft/
index row size 3952 exceeds btree version 4 maximum 2704 for index "api_versionmetadata_metadata_name_df1014db_uniq"
DETAIL:  Index row references tuple (1,4) in relation "api_versionmetadata".
HINT:  Values larger than 1/3 of a buffer page cannot be indexed.
Consider a function index of an MD5 hash of the value, or use full text indexing.