{
  "manageEntity": {
    "action": "Update",
    "entityId": "336558386",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x76b1e84ae51ffed79e1295a0795e99aabf380960cf74f93f4c23f32e02327e23",
    "signature": "0x6248159edbdb530d0f6d7141cd51cf6b1079fd74954e082d1ca69efe8c899a8c7b1a271584d5f7c5474fdfcab70624ffda754473d3c3d27cd199a8d3ff0fc36e1b",
    "signer": "0xBe18AC3d342FECf3B94A0d895aC912A6617c5209",
    "userId": "336558386"
  }
}