{
  "manageEntity": {
    "action": "Update",
    "entityId": "203621449",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8b48be14303592d7ef15e86813a5f93a0a1484415e09e89000decfcda9e3503a",
    "signature": "0x2bf7182e88cd2e457503706b963af01151d0c6432c9c4dda9c71c34e83177c117bf841d729f5e6b6ffe12340e5b436306aa0cd9a9907951dddec34e9f11a785e1c",
    "signer": "0xEb5CAAcE54E2A28dE521238663b8485d3347A46A",
    "userId": "203621449"
  }
}