{
  "manageEntity": {
    "action": "Update",
    "entityId": "873620060",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraveg7udrg7tmfwnuieflaxspmiruquy6prghlmtzhvn4o3inaje4q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1601978251},{\"type\":\"playlist\",\"playlist_id\":1283928218},{\"type\":\"playlist\",\"playlist_id\":225459156}]}}}",
    "nonce": "0x3cb5a0fa673e026bdfa96b8e6866ee505572608b13917994509dcd0b5e4b837a",
    "signature": "0x8a34c2bdc81f999fd7d33ea6a815906be788770ef7578d51ffd62a4d74c762f055213a34ed52a5ee9667c5e2d0e780a1f6ef884d9d8e1eef24f511ebceb2f2051b",
    "signer": "0x1F40d6774264ee06e8e4c0FBC2220de42404015E",
    "userId": "873620060"
  }
}