{
  "manageEntity": {
    "action": "Update",
    "entityId": "539952682",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2ccb6e5abbb122254a74023516de67bb9bcbca7447e97cfa151c3fa0a7103e8f",
    "signature": "0xeaac4ca1654eb18b422aae1378d23c50bb3e44cee43c20244bdc07fb6d5a323443b53e0ad9f68937d216c284238fb0d7957d7668be1c9bc7afdf9f8d02f3442c1b",
    "signer": "0x7dd929d0bCEb82111e9A1f35acdaCc8C3e285831",
    "userId": "539952682"
  }
}