{
  "manageEntity": {
    "action": "Update",
    "entityId": "512022848",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf6ab3ef50188f8437e98eddc8f58da9e6730797dd4053c007ddf4c487e9e65e6",
    "signature": "0x8057a3504fe4e62275e66f36dd31191480b9893d0d4973d38ac48384816150dd0268c74f174bf78501bad11500e098efb5b691760a38eb68796594ce86e1ffe21c",
    "signer": "0x9b682c779356138D1D188CAB373b0F44a2d43d09",
    "userId": "512022848"
  }
}