{
  "manageEntity": {
    "action": "Update",
    "entityId": "302800823",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x221f54c17aa81764f002c1f75976da6e9206d5b751b6415683dad85dce6310d8",
    "signature": "0x7dcfb7eec0eff9bff5176143c99b844bbd7fe989de45164b8c5fe27aae07c9583b28bf44bdd000e29ffa757d0ec0e7220c42ffb0e18148393c1c30ede724a6f11b",
    "signer": "0x78A1B4FE632CeaAccC76a4e01ea2D766006B9d67",
    "userId": "302800823"
  }
}