{
  "manageEntity": {
    "action": "Update",
    "entityId": "466381606",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x140141bff3c203e1c2872415c660bec7f18de73eb536d25515258b3b8f758736",
    "signature": "0xb78005c67c45b9d2869b12927aa4c84270cb49386d121e311d28f85d57047d3f77914a90b400ab523cd445825b84d1fc8cdc33ae5f7f5a46ad47bcea04e751031c",
    "signer": "0x9E37CE51928d7BE628DDD78bfc08103D9223b362",
    "userId": "466381606"
  }
}