Creating Dictionary form LOG /text file

[DG1234]

Hi All,
I am new to Python world and because of that I am not expert to do all the stuff. I am having some issue to convert below log file content to Dictionary format. Appreciate if someone from this forum please help me to do that. Thanks in Advance.

log file content like below. This log file will have several thousand record and each line will have more key.

002d2d62-4445-a06d.log:20190208 09:19:43.115 Debug Generic_OnWorkComplete: Message: {"sourceSysCode":"TP","sourceSysAcctNumber":"12234678901","transactions":[{"TransCode":"XXX","AcctTypeCode":"DD",,"BranchNumber":"000x","Desc":"02/05 FEDEXOFFICE 00 GGGG","ProductCode":"104"}]}
002d2d63-4445-a06d.log:20190208 09:19:52.538 Debug Generic_OnWorkComplete: Message: {"sourceSysCode":"TP","sourceSysAcctNumber":"22222222222","transactions":[{"TransCode":"YYY","AcctTypeCode":"DD","BranchNumber":"000y","Desc":"02/05 FEDEXOFFICE 00 YYYYY","ProductCode":"104"}]}