{
  "manageEntity": {
    "action": "Approve",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xc54bbb0ccf422e3c66c9120fce31f9aa2596b016\",\"grantor_user_id\":2167}",
    "nonce": "0x9cf3a9b9c12d156ba8c2796c0817ad892584f88585e32fa2973a233e45493d3f",
    "signature": "0xf0d66952743214fe140e96906979b046727bf4400a670a705b71950e9fd92a7722957d4c7db6c099fe5a74fc644318b1ebdafb40c24b20b48e987216fa0d81c51c",
    "signer": "0xc54BBB0cCf422e3c66C9120Fce31f9aA2596b016",
    "userId": "513483166"
  }
}