{
  "manageEntity": {
    "action": "Update",
    "entityId": "620921422",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraa2lzo7fox44sb7jjjiagw3vhy2q4gvrhjytntwahulox3tfrnfqq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1712365028},{\"type\":\"playlist\",\"playlist_id\":145520179},{\"type\":\"playlist\",\"playlist_id\":1595469811},{\"type\":\"playlist\",\"playlist_id\":1456997187},{\"type\":\"playlist\",\"playlist_id\":1819900399},{\"type\":\"playlist\",\"playlist_id\":1694675948}]}}}",
    "nonce": "0xbfb9be2951ba7d5768b3c7287654f7999d5591e65ed39de2df65f3170241b545",
    "signature": "0xfb9656397b9ea29db9eeea689838a98ec001bbaadb04aa24f44bfc1bd2d74b4822049d3f893be92cd69ade1fd293cba4b99c57212dc813662d9601ecb4cbfecf1c",
    "signer": "0xdfcc4d06D5B8A0AF1AF77B1Ec434e5F50B625a75",
    "userId": "620921422"
  }
}