{
  "manageEntity": {
    "action": "Update",
    "entityId": "520090296",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x091fa9f31d73165400e4d402e1495d7bfaf1ea09a39546729f020ee4530488c0",
    "signature": "0xdf4872ea3afabfaebcdfc7c542345c62f7adf5d35932b641743b262106cf9259251faaccd53adb924117d1acd08972c4c7c9c07514e2296a7105a403f56b9db31c",
    "signer": "0x480dFF5F3f4eAa74182DE17004D849D7f52cbb4a",
    "userId": "520090296"
  }
}