i have checked my wallet and found payment of 0.00000546 BTC from address i don't know 1ViViGLEawN27xRzGrEhhYPQrZiTKvKLo.
first time i receive something like this

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i did some google search ,turned out a site with name vivigle who sent it , i don't care if this just advertising , it's funny ,
Well, if you got it then good but surprisingly thing is that how they get your bitcoin address? May be you do something for them. Better to ask them, and if you are not interesting on it then enjoy it. But still it is strange thing, may be some probably random then it is happened and by mistake they sent 500 satoshi in you ID.