{
  "manageEntity": {
    "action": "Update",
    "entityType": "DeveloperApp",
    "metadata": "{\"address\":\"0xf3b851beaa8015876d3c90b76ca822d892538f56\",\"description\":null,\"image_url\":null,\"name\":\"freesongs\",\"redirect_uris\":[\"http://127.0.0.1:8000/free-music/callback\"]}",
    "nonce": "1780495170298324274",
    "signature": "0xd5b28ec30972e85073addeba3579b3b66e3a81bd9abfdc7679d91c4c9027a64534fccd4f8cb6d8f5ab0fcee60edad5cefbf800b4a2d7fc5afa381bf05f56488e1b",
    "signer": "0x2cc593FC814461263d282A84286Fd4F72c79562e",
    "userId": "643398821"
  }
}