{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x00d5f1237b3943b5c207eb7afec3151ab09e50c37805b448f7935d82386c8624",
    "signature": "0xd8cc75e516a6a81e1f5aada2a9261126a4f084e19d5c46532b7947fd6b9ffdfc2a2399942176881bc38023f2611e85203c1d7e4019a37d69a538275ff89b537d1b",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}