{
  "manageEntity": {
    "action": "Update",
    "entityId": "879852542",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5af1df36100467e3006ffc0fae70680490b821669cd1df8688fbef6a489eb7d0",
    "signature": "0xd84ac9e912cb8410be88fa5394903390fcd9d5dc23ae7b43990843bbd094eac62014aae304d55ec1819e848faa223f24c0f3d3f4aeb577b09098206b048aab6e1c",
    "signer": "0x12764976312081412a5D2a854e6e46Bdb3cc2526",
    "userId": "879852542"
  }
}