{
  "manageEntity": {
    "action": "Update",
    "entityId": "427798224",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieracygw52wfwau2tzds4owgpiu3xxqncputncyoldzplx3mqpsant6q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":468408998},{\"type\":\"playlist\",\"playlist_id\":1547816515}]}}}",
    "nonce": "0xee6ce7be985a9c1845f467bd25329316552123828cb0626ac2f38165befa767f",
    "signature": "0x25f5037d14a5bc3b22941c39c65fbce634263e4d9c77f2f66d2d883bc14ffb5f35e84feb6dab04dd1e89e2f4f957307cbfde134ed91bbd62ef0bb654e5a5ad1c1b",
    "signer": "0x8A43ca6C48A13586f2a6ABc3118B2ce7D743c901",
    "userId": "427798224"
  }
}