{
  "manageEntity": {
    "action": "Update",
    "entityId": "987235245",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierakc4egrzl4xh3ankxf5mkxvqo7a4om75ghwgpt3b5lwjsoyarnsiq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1984674782},{\"type\":\"playlist\",\"playlist_id\":1806216563}]}}}",
    "nonce": "0x345887eeedb15b9bd2465d23cef24e02344f44797bf1842c5a7f4abb97ff939f",
    "signature": "0x0cb17f5ccaf358598fd35108a4056c0a4f2827b0728176b8d859c75b14d683603c78074d14dc4e3510617cd220b1849b1490c7363b80d76c1b10b8ee633d7f311b",
    "signer": "0xA4726dDaAF2af20D291A670299DaD1375F847b41",
    "userId": "987235245"
  }
}