{
  "manageEntity": {
    "action": "Update",
    "entityId": "448693482",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera44xmuytwuabl2pweszecvpji7aqsilapv64vumi7vpf7kgjf77eq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":766186425}]}}}",
    "nonce": "0xf24b09a75ccc7c359d77ea147e9cb784564f5b7fb1737942ffb83deab8776197",
    "signature": "0x2e1c751de336fe2aa896acbc3ebe85568c480c86f9d8892a0c9bdaab5fdd5a2d12a5525b47d8be5393b408aa831fe0af6d852386511a4d14476a148cc4554da31b",
    "signer": "0x239136F5cc278393F2dF9D61b8477152F8057009",
    "userId": "448693482"
  }
}