Parsing JSON response from webhook

I have a JSON response I'm trying to parse that looks something like this:

{

• count: 1,
• type: "FeatureCollection",
• features: 

   

  [

  •  

    {

    • type: "Feature",
    • properties: 

       

      {

      • umi.geolytics.projection_year_summaries.avghhsze: 1.53,
      • umi.geolytics.projection_year_expenditures.entertain: 3002,
      • umi.geolytics.projection_year_housing_stats.medhomval: 851416,
      • umi.geolytics.projection_year_expenditures.healthcre: 5302,
      • umi.nielsen_popfacts.cy_households.med_hinc_c: 46801,
      • umi.us_census.tract.lsad_name: "Census Tract 119.02",
      • umi.geolytics.projection_year_expenditures.fawayfrhm: 2363,
      • umi.csmr_exp.attributes.plfeothpsi: null,
      • umi.csmr_exp.attributes.etpublic: null,
      • umi.nielsen_popfacts.fy_households.med_rent_f: 41.3,
      • umi.geolytics.projection_year_expenditures.hsehldexp: 50205,
      • umi.csmr_exp.attributes.ehtelephne: null,
      • umi.csmr_exp.attributes.ptgasoil: null,
      • umi.geolytics.projection_year_housing_stats.med_grrnt: 2520,
      • umi.csmr_exp.attributes.ehmrtgintc: null

      }

    }

  ]

}

I'm trying to grab the value for umi.geolytics.projection_year_housing_stats.medhomval

In the webhooks config, I've tried:

features[0].properties.umi.geolytics.projection_year_housing_stats.medhomval
features[0].properties."umi.geolytics.projection_year_housing_stats.medhomval"
features[0].properties["umi.geolytics.projection_year_housing_stats.medhomval"]
features[0].properties["umi.geolytics.projection_year_housing_stats.medhomval"].value

None of which seem to work. Any ideas?