{
  "manageEntity": {
    "action": "Update",
    "entityId": "839476571",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x01bbfbad715d208644de92f4bc77fb162d53d7279cba9d0f2c7be6b41be0ce45",
    "signature": "0x35fc2707903055d99f1720369e1e08b05c9e526c04f9862bb3c45b9ba8632a2a265230d491da57c81f126321b5d8d8791164ad7d5bfb99d0cf96e472df72c28a1c",
    "signer": "0x948D77DF55Fc29CbAA7bfD556885c50A8dC7814E",
    "userId": "839476571"
  }
}