Google-Chat-API: Open dialog from posted message - hangouts-chat

Question

I use bot to post cards with version 2 (сards_v2 property).
Cards are rendered as normal, but I want to add a Button to open Dialog. This does not work.
How can I achieve this?
I post to POST /v1/chat/channels/:channel_id/messages?
body:
{
"cards_v2": [{
"card": {
"header": {
"title": "Rolodex",
"subtitle": "Manage your contacts!",
"imageType": "CIRCLE",
"imageUrl": "https://www.gstatic.com/images/branding/product/2x/contacts_48dp.png"
},
"sections": [{
"widgets": [{
"buttonList": {
"buttons": [{
"text": "Add Contact",
"onClick": {
"action": {
"function": "openDialog",
"interaction": "OPEN_DIALOG"
}
}
}]
}
}]
}]
}
}]
}
Then I click on Button, and receive event:
{
"type": "CARD_CLICKED",
"eventTime": "2022-08-31T16:16:36.147391Z",
"message": {
"name": "spaces/:space_id/messages/YTyNVBNW-H4.YTyNVBNW-H4",
"sender": { ... },
"createTime": "2022-08-31T16:16:31.639439Z",
"thread": { ... },
"space": { ... },
"cardsV2": [{
"card": {
"header": {
"title": "Rolodex",
"subtitle": "Manage your contacts!",
"imageType": "CIRCLE",
"imageUrl": "https://www.gstatic.com/images/branding/product/2x/contacts_48dp.png"
},
"sections": [{
"widgets": [{
"buttonList": {
"buttons": [{
"text": "Add Contact",
"onClick": {
"action": {
"function": "openDialog"
}
}
}]
}
}]
}]
}
}],
"retentionSettings": {
"state": "PERMANENT"
}
},
"user": { ... },
"space": { ... },
"action": {
"actionMethodName": "openDialog"
},
"common": {
"hostApp": "CHAT",
"invokedFunction": "openDialog"
}
}
First: Event skips DialogEventType is REQUEST_DIALOG.
Second: When I respond with dialog response, but no dialog appears.
{
"actionResponse": {
"type": "DIALOG",
"dialogAction": {
"dialog": {
"body": {
"sections": [{
"header": "Add new contact",
"widgets": [{
"textInput": {
"name": "contactName",
"label": "Name",
"type": "SINGLE_LINE"
}
}, {
"buttonList": {
"buttons": [{
"text": "Next",
"onClick": {
"action": {
"function": "openSequentialDialog"
}
}
}]
}
}]
}]
}
}
}
}
}
I see only error: