OCR a photo to return a list of words found

Example response

{
  "results": [
    {
      "nutrient_overrides": {
        "aa_patient": {
          "ontology": {
            "id": 42,
            "levels": [
              "food"
            ]
          }
        },
        "bb_reviewer": {
          "ontology": {
            "id": 42,
            "levels": [
              "food"
            ]
          }
        },
        "cc_external": {
          "ontology": {
            "id": 42,
            "levels": [
              "food"
            ]
          }
        },
        "dd_estimate": {
          "ontology": {
            "id": 42,
            "levels": [
              "food"
            ]
          }
        },
        "ee_validation": {
          "ontology": {
            "id": 42,
            "levels": [
              "food"
            ]
          }
        }
      }
    }
  ]
}