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": ""}
   j?yQ 1536234   NIGRICANS kuG    8~N hedyotis  TK (LAM.) FOSBERG f. lind heimer 1(X?v   U NITED STATES u%eJ  gentianales Tju$  Rubiaceae rb9   X Texas  NCN S.N.       [[   HEDYOTIS NIGRICANS no data L   D@! Contact UMHerbarium 1847  Ag2   
{"catalogNumber": "1536234", "order": "Gentianales", "family": "Rubiaceae", "scientificName": "Hedyotis nigricans", "scientificNameAuthorship": "(Lam.) Fosberg", "genus": "Hedyotis", "subgenus": "", "specificEpithet": "nigricans", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "F. Lindheimer", "recordNumber": "s.n.", "verbatimEventDate": "1847", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "no data", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}