{
  "manageEntity": {
    "action": "Approve",
    "entityType": "Grant",
    "metadata": "{\"grantor_user_id\":1389486}",
    "nonce": "0x64fe0efe4a8b580fc4af3b5797a10b1324e044a0fea791658f0e4319e2804393",
    "signature": "0x1f1b8ac5e233b0e5475b9484f5038efa687ac6d40771cb497860b5de4b31482d6635d2ea96ba2be5be900020daf40de72c0f680023f8be6a2d93d08bbb708a5a1b",
    "signer": "0x593095CdF6998387B0c1bd237B5e2e1f5022C99a",
    "userId": "77401"
  }
}