{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x2cc593fc814461263d282a84286fd4f72c79562e\"}",
    "nonce": "0xe6c9daace41a5acda8a2bf885ec9cb4fff2a3a961fde964778f8505b08005824",
    "signature": "0x588b4d7e39b15e1c7080aa9618b6323db69bdcabdfaf32cc58f1f78d36e458722ea21b2aef510c898199a803921c283a6dfc1dbf7a64a3fdf9567ebba060a8231b",
    "signer": "0x3DdfB99173Ed7ff3A083C9C589582B230d37906E",
    "userId": "192527938"
  }
}