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": ""}
    +- C.N.R. RACKS, EAST OF SIDEROAD NO. 4, C4RADOC TWP., S.-W. OF MT. BRYDGES, ONT. U.T.M. 541448  b-Tw CANADA   1C/ DIGITARIA  z^/X 1981-10-24     B 1427831    Middlesex 4[         v.t.m 541448 jxI      
{"catalogNumber": "1427831", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Digitaria", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1981-10-24", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "", "county": "Middlesex", "municipality": "", "locality": "C.N.R. tracks, east of sideroad No. 4, Caradoc Twp., s.-w. of Mt. Brydges, Ont. U.T.M. 541448", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "U.T.M 541448", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}