flink cdc的1703083351000时间戳，怎么转化回orcle的timestamp类型？

flink cdc的 1703083351000时间戳，怎么转化回orcle的timestamp类型？{"before":null,"after":{"C_W_ID":"4","C_D_ID":"1","C_ID":"42","C_DISCOUNT":"0.1942","C_CREDIT":"GC","C_LAST":"BARPRESOUGHT","C_FIRST":"Ca6nEcijB3XevhD","C_CREDIT_LIM":"50000.00","C_BALANCE":"-10.00","C_YTD_PAYMENT":"10.00","C_PAYMENT_CNT":"1","C_DELIVERY_CNT":"1","C_STREET_1":"PdKTIMc7RZlT","C_STREET_2":"RjuJ4Vhd74w0mWlwcFFS","C_CITY":"tVbuP7r0LtsFgDhY7Z2","C_STATE":"QB","C_ZIP":"240411111","C_PHONE":"0183433443800592","C_SINCE":1702665963195000,"C_MIDDLE":"OE","C_DATA":"GcrOcQvrvXk31ij5Q7gjpT6hK4ZBeDSLntbtIR91Q0v6f2tClWCy0BLAyxDS6PHBEzSsE7lj4KdGANjtk3X8BvKq34b8DmcmQVEkRndkIIS1p51WrGmrl4I2eFLjQn0PxIINhW0Kd2R2vojLpSXTTp5c5tTW7BTjL3V5lrwyw6Ftrxa1xO3Ag8jz9JoI5NDHH4Y2izBZrpRsfD2CbCbSsxTOk4KN2LfHPMVmhzElW058jYHQsY9qYhrEgqttYZgfAqTzmUcURea6nJgLn3Hl9sHxmJFA4L1Nr1kf8QTqlCo18bO4MzInQ6Ys6SBdKG9s9e1LR9HFhoLv5wAqEAd4wKuVe01gw0Cvbtvfcm3dDyCij9XyN8ZytE9w7EL2DJCeaXlFdkWDxPVVvWCw8a065w5gvqvALKalSddgjdjEVAhIS9WsQ4jPJ0DTdHw5d3xArAcurFr1lzrscdX8JrkfqbfcQCTJD92gTFHj"},"source":{"version":"1.9.7.Final","connector":"oracle","name":"oracle_logminer","ts_ms":1703083324000,"snapshot":"true","db":"ORCLCDB","sequence":null,"schema":"FLINKUSER","table":"BMSQL_CUSTOMER","txId":null,"scn":"8952871","commit_scn":null,"lcr_position":null,"rs_id":null,"ssn":0,"redo_thread":null},"op":"r","ts_ms":1703054537552,"transaction":null}