{
  "manageEntity": {
    "action": "Update",
    "entityId": "328797146",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdfc42353d523fb113d01ad96fa5fbb26d69c93fd9bc889f380a201d92fde95af",
    "signature": "0x15d9e234a72a63148f5b1a615310a6a33743a18b98a1a38dfa77f6d539604c7b15235ee07fbdd90b6d4be6e3e30052d2f3e5837117dad3505c224a293464f2f31b",
    "signer": "0x5fFf561f49180ddDc64C036f9F45ae3910D35c54",
    "userId": "328797146"
  }
}