Update Dialog

Update a dialog.

The following rules are applied if dialog's type=3 (PRIVATE):

- Any user from occupants_ids can update custom parameters.

The following rules are applied if dialog's type=2 (GROUP):

- Any user from occupants_ids can add other users.
- Any user from occupants_ids can remove only himself.
- Any user from occupants_ids can update custom parameters.
- Only dialog's owner (creator) can remove any users from occupants_ids.

The following rules are applied if dialog's type=1 (PUBLIC_GROUP):

- Any user from occupants_ids can update custom parameters.
- Only dialog’s owner (creator) can update it.

Recipes
Update dialog name
Open Recipe
Add participants to the dialog
Open Recipe
Update custom data of the dialog
Open Recipe
Remove participants from dialog
Open Recipe
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