{
  "manageEntity": {
    "action": "Update",
    "entityId": "354197891",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4a2922a190b3e568a8a37009d9c6d39b1cb98debe2b7ffbae4b3e76a57ac20fd",
    "signature": "0x683ee4c07534dd0328aac1c460158438cee6a6548cf19176e49368d06ed10be526dc573c2907a768118be270c5182bf9ac59e94eead960115cd2d3060e4ed9a31b",
    "signer": "0x5bB9Cd295E2E2Ec2Da049D53c19449e5BD75e200",
    "userId": "354197891"
  }
}