{
  "manageEntity": {
    "action": "Update",
    "entityId": "303393509",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb82f660edfe86ed925b457babebf9555f8479c160b9c22081095098ce36931dc",
    "signature": "0x5c3c798726c5fc06cfeb4b3bfea8d1e5ac8b05105f1f4204f59672c595dc9e5a013b1c336490151c0afb193ea6afcfe02ac6074f060f9eacc026658fa2cb569e1b",
    "signer": "0x4E073b7076371ff6Bf848d0B4abA785B38B5ff1E",
    "userId": "303393509"
  }
}