{
  "manageEntity": {
    "action": "Update",
    "entityId": "210120811",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6ff94c47521f58046b14bc102d23160c9dd1deda6cd70f756d7c15307f85a553",
    "signature": "0x356147cf5f7bf906d3b885835907797a8e5aa90244ff63dacda6e4ecd4e46fb870aef559a6c698d8e3862ce7eeff4e103dcdce4f18827658ce0a9d9da5660a551b",
    "signer": "0x2f3451179beA9A3C62532F5C9D20609cDf14C4Ee",
    "userId": "210120811"
  }
}