Labels in Loki from Vector come as regular text

Hi!
I wanna configure vector+loki+grafana for collecting container logs from nomad cluster by job name.
I get logs from vector in loki, but in grafana i have only one label filter - agent. I see labels from vector in log text, why they is not in filter?
For another project i use loki docker plugin and all labels accessible in grafana ui as labels.
How i can set Vector labels in loki?

Example log message:
{"container_created_at":"2023-11-15T06:37:53.690533726Z","container_id":"7cdf364975ccaa4896887123279bfc12b83115e137069fbc0debacc810b60da0","container_name":"nginx-dev-7db277d9-fa3b-df27-3661-cdfd6b1d00c1","host":"353b526c37df","image":"test-nomad:nginx","label":{"com.hashicorp.nomad.alloc_id":"7db277d9-fa3b-df27-3661-cdfd6b1d00c1","com.hashicorp.nomad.job_name":"nginx","com.hashicorp.nomad.namespace":"default","com.hashicorp.nomad.node_name":"test-nomad1","com.hashicorp.nomad.task_group_name":"nginx-dev","com.hashicorp.nomad.task_name":"nginx-dev","maintainer":"NGINX Docker Maintainers <docker-maint@nginx.com>"},"message":"10.14.1.112 - testo [15/Nov/2023:07:50:53 +0000] \"GET /v1/client/allocation/2b403703-57ec-bac3-7469-9be63fe07978/stats HTTP/1.1\" 200","source_type":"docker_logs","stream":"stdout"}