{
  "manageEntity": {
    "action": "Update",
    "entityId": "1415762",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierazf35e3tayyf44dgl3fjnnon7klslzmjhckg6yaaw5aw5ubopzxya\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1087030952}]}}}",
    "nonce": "0x9acf8506ce3711c320f6d3745e21bc3efd5cc19286a6eb1548bd42f04f5fc4dd",
    "signature": "0x1bb0abb6bb036a212a6f2de2a5e4ce44973a30fe5fb09094d7aaf3487ca89efb092f5b34cb6991329967838f77205a800e493511782292bf24e0661446f057f11b",
    "signer": "0x803cAa47D9F525D1180159ddCAC9575061b200B3",
    "userId": "1415762"
  }
}