{
  "manageEntity": {
    "action": "Update",
    "entityId": "407046354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x10ec1fd4b8fa852e13002a559feb0940add5919d397595d00f9726d852e4541e",
    "signature": "0x8aff603b33d33a9f17c92c9bc5958bd867936eacbc3283b30d87172f1d79e92f546efe595a3b6e3e840f0c2da863f56235344b7569cc8772c0d6e2a5b758cce91c",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}