{
  "manageEntity": {
    "action": "Update",
    "entityId": "435330450",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x25b8f8c05094f63309ad13eff15014511373dbd07c45ca5a06a5f51bd74d78f7",
    "signature": "0xbff962ab8fe9a779ec26c04a10e7c27d4b9a40538f8ee23e08343da8fd3fbb327c078f8bb6d69c0a855a376d317c2dbf5e2fffabbbdb16a15671f6837670c2501c",
    "signer": "0x3FeE0Ea3F221d5a5eB081498551579Ce7529FaAe",
    "userId": "435330450"
  }
}