{
  "manageEntity": {
    "action": "Update",
    "entityId": "503384759",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5cb2745e3d4361d0e25619bdf02592b2fd962d73f2d0eda7a93e126b2c9e2fb4",
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    "signer": "0xB0A368693a6968A4B20dc99D5Bf153a3A60bdeBC",
    "userId": "503384759"
  }
}