Unable to create ledger with version 3

[Rehman-Akram]

Following documentation, but unable to create ledger. It gives me an error that "JSON document's top level element must be JSON array or object.", however providing correct body as per documentation i.e.

{ "@context": { "ex": "http://example.org/", "schema": "http://schema.org/" }, "ledger": "cookbook/base", "insert": [ { "@id": "ex:freddy", "@type": "ex:Yeti", "schema:age": 4, "schema:name": "Freddy", "ex:verified": true } ] }

Reference:
#https://next.developers.flur.ee/docs/reference/http-api/#example-request-object

[Rehman-Akram]

its working