{
  "manageEntity": {
    "action": "Update",
    "entityId": "638027537",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierai2bu2qhlyi45bmq5pwzezkr7basmmqs4yubgl6ee444gv4nmm5da\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":490361547},{\"type\":\"playlist\",\"playlist_id\":1948893357}]}}}",
    "nonce": "0xebd1db510380e8914482be02fbe5fff60b912ccf91570cd09f975d025cc17e31",
    "signature": "0x7805f0cd0fc5948f0637b74e8cf4f9acc7d483df9481a1a25e15f07ada98408368977730127245a8cc583a21a3ca2dbe42e76035e45d82a25d9a1e14373d73e81b",
    "signer": "0xe2b4d97BC8F12695D9607DA63B9776C3582d004E",
    "userId": "638027537"
  }
}