{
  "manageEntity": {
    "action": "Update",
    "entityId": "612535858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawcbslfnntkfrp4ulrxeixh253susrsuziqpkvkcfzkpguotm74ma\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":9733393},{\"type\":\"playlist\",\"playlist_id\":833781591},{\"type\":\"playlist\",\"playlist_id\":1919740850},{\"type\":\"playlist\",\"playlist_id\":1307333387}]}}}",
    "nonce": "0x1940f4a22580e4c8cdd5fad545b6d252a4c9387c4845d4c02572cb4dd5da48bd",
    "signature": "0x1af351fac64b8cb1d80ccd19c6dd48b6234aa5bef276dc4828e5a092704322316764071594a6d45778baaa6f363607c3dbdd77d34b4013b6d840290941c330bf1b",
    "signer": "0x473ac84E91B21C4fEEa96a0742db8bAeDC7F3A5e",
    "userId": "612535858"
  }
}