{
  "manageEntity": {
    "action": "Update",
    "entityId": "960205221",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x93f0f5a76d67ff702fe32022e6c0afd8aa22f4183aca6be31ba90ef91c78d265",
    "signature": "0xf671705f23d460758a09fcbbf7c6126a7abc48dece5668c4209d1f166fb8832307dfd86705aa00e98b0f24164805bd931833bbdc5ac9394f8f81eb3a75158d7b1c",
    "signer": "0xBCb96c4190ece89b9b603DD72a53771e861A2A9d",
    "userId": "960205221"
  }
}