{
  "manageEntity": {
    "action": "Update",
    "entityId": "750592366",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xddd61ccc90ffb14ad6c26d996feffc78b31259898421015d98c4281cab8b1b38",
    "signature": "0x27df96dd5eb4fbbd02cdb99f8cfcafeefbf910f28a2b0e299adafedb949b68ce4ecebf33dbed587a476b17ed0eef57a348142549fad2d7b906bcdeb89ae790b91b",
    "signer": "0xfDB135c6576F4c2f11DAb7Fc81d12eB18c594598",
    "userId": "750592366"
  }
}