\g<i>"player": {
\g<i>  "type": "minecraft:entity_properties",
\g<i>  "entity": "this",
\g<i>  "predicate": {
\g<i>    "minecraft:type_specific/player": {
\g<i>      "advancements": {
\g<i>        "\g<path>": \g<val>
\g<i>      }
\g<i>    }
\g<i>  }
\g<i>}