OSV structure in ASL sentences
Topicalization using an OSV (Object Subject Verb) structure in American Sign Language (ASL) is very common. Although, not all ASL sentences are structured as OSV. There are some SVO (Subject Verb Object) sentences where fit.
Gloss: /\GREEN CAR/\ I REMEMBER.
English equivalent: I remember the green car.
While signing the object (GREEN CAR), raise eyebrows as well as slighting tilting forward the head. Another example:
/\CAT IX1/\ DOG(IX2) BITE(IX1). IX1 and IX2 represent spatial references.
These are a few examples of numerous OSV-structured sentences. In addition to some examples above, you'd see a plenty of OSV sentences in the ASL dictionary on this website.
Also see SVO sentence structure (Subject-Verb-Object).