{
  "manageEntity": {
    "action": "Update",
    "entityId": "904851549",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd7c0d567dc87c8859ae2fc6bc95fdefc7d5c1c39c92953d133751d77b2d6927e",
    "signature": "0xdf58ec084b761956b0855dcca4b8631fd8574dc215fb88a7a67c4f9045b0ed4729901456ea169f29a5a94ff05c9471474308eb54a9d3fd16fabdecec6cd24b461c",
    "signer": "0x716E7A2FF214B0ba1e763f43C4837480dBEab829",
    "userId": "904851549"
  }
}