Authorization: ********************{
"l1_node_ids": [
0
],
"l2_node_id": 0
}curl --location --request PUT '/api/admin/line_group//l2_link_l1' \
--header 'Authorization: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '{
"l1_node_ids": [
0
],
"l2_node_id": 0
}'{
"code": 0,
"data": null,
"message": "string"
}