{
  "manageEntity": {
    "action": "Update",
    "entityId": "392444636",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4ca60f49421f6e4cb658590d28359c88e76853d9de6504a96f6e4dced85efacf",
    "signature": "0x3de65ad59ca3ecb04f85bac87dccb9fe1adaba89974670b4b92c51bd1f7f091b0ae81b1234493547c2a90bf390c59572bfa9a90947d9b7ef37b9102b0e36b0661b",
    "signer": "0x8CB22Fd2b9EE80E52B7B22Bbb5974F28a3b1B9AA",
    "userId": "392444636"
  }
}