{
  "collection": "layers_maps",
  "field": "maps_id",
  "related_collection": "maps",
  "meta": {
    "junction_field": "layers_id",
    "many_collection": "layers_maps",
    "many_field": "maps_id",
    "one_allowed_collections": null,
    "one_collection": "maps",
    "one_collection_field": null,
    "one_deselect_action": "nullify",
    "one_field": "layers",
    "sort_field": null
  },
  "schema": {
    "table": "layers_maps",
    "column": "maps_id",
    "foreign_key_table": "maps",
    "foreign_key_column": "id",
    "constraint_name": "layers_maps_maps_id_foreign",
    "on_update": "NO ACTION",
    "on_delete": "SET NULL"
  }
}