{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x693d257e080a558c398011d4c4223953f8e8adec78ed24e75650678a681b070b",
    "signature": "0x2deee15c8e19c16e489ef2e815c8f845660cdb148d092059c127080a197850573d0f47722d769bbd329115ae44c3810eb909798d9d5cc75a9853e239437300ab1c",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}