{
  "manageEntity": {
    "action": "Update",
    "entityId": "539966008",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierax2z5ted4gqdzpqn3o6a53qnvt7gwr3lzaxq7kakzng26whksmazq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":574881189},{\"type\":\"playlist\",\"playlist_id\":1814815576}]}}}",
    "nonce": "0x3be0980a5416bf0b06eadc7615e24afbe65a487732952ff6c6a6bf91aad860af",
    "signature": "0xac401258b7967e46bae59d6962da4c6d24080a1098b779ca4acd4c5b607500934336675fbcafd941bf61e10fdededce678a46091df840e26f497599a58f18ed31b",
    "signer": "0xCf3010b3785c01D4D07623A089e44dd7A1Ef1cDf",
    "userId": "539966008"
  }
}