Search by entering to value in JSONField PostgreSQL

Hi! I work with poorly structured data. I use EAV. But I want to replace EAV with jsonb in postgresql. I need to do a search by entering to value in json.values(). Is it possible? Is there some decision on Django or SQL?For example, there is the model

class SomeModel(models.Model):      data = JSONField()  

That jsons stored in rows in data field:

{"name": "Michael", "friend_name": "Sara"}  {"name": "Miranda", "friend_name": "Richard"}  

If I type "ar" in search input I want to get both rows("ar" in "Sara", "ar" in "Miranda"), "cha" - both rows( "cha" in "Michael", "ar" in "Richard"), "ir" - only one ("ir" in "Miranda"), "asdq" - nothing. Is it possible with Django? Is it possible with SQL? Thank you and sorry for my English.

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