{
  "manageEntity": {
    "action": "Update",
    "entityId": "542041690",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9bae42063455a8eaca90b04337149da8ab59986c9afeb8080e388f304fb8f0cf",
    "signature": "0xa5f20e9580922380786617408b41493260eb33d8fca1e139b2b33069e21d96a227254b23be10b3f4cfd1aa6f52bf0ed6e00507947d7ff49860f6a2c8d0bbc5601c",
    "signer": "0x4775139b470b668e3674eFBc19f585516aFa80e4",
    "userId": "542041690"
  }
}