{
  "manageEntity": {
    "action": "Update",
    "entityId": "11868595",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x16d2c38fc81adacee0f00efde12caf4f04e552d76951e9774d7dd04a79172ae3",
    "signature": "0xc4119b9888c2b30a79483c467000473f87273a60b43235918963f04c7d6a025050e619dd372dbd63cd97985e86394e299ff50a48af67aea7177f98a9af912d4b1c",
    "signer": "0x63eD341eAe0269d9C71a59862C0013faC0b10a16",
    "userId": "11868595"
  }
}