Refactor the unstructured text into a valid JSON dictionary. The key names follow the Darwin Core Archive Standard. If a key lacks content, then insert an empty string. Fill in the following JSON structure as required: {"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}
1536180 d^j6O   Gentianales _H   6 ]I MANITOULIN   HOUSTONIA CANAD_ENSIS E    UsW canadensis   % tamarack cove  4ws60 Camada houstonia 4   H RUBIACEAE      OPEN BEACH #vRa<    r3>!Y 4196 WILLD. EX ROEM. & SCHUL. ?  WALTER N. KOELZ H    |V_ ONTARIO 1932-07-19 eI 
{"catalogNumber": "1536180", "order": "Gentianales", "family": "Rubiaceae", "scientificName": "Houstonia canadensis", "scientificNameAuthorship": "Willd. ex Roem. & Schult.", "genus": "Houstonia", "subgenus": "", "specificEpithet": "canadensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "4196", "verbatimEventDate": "1932-07-19", "habitat": "Open beach", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Manitoulin", "municipality": "", "locality": "Tamarack Cove", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}