{
  "manageEntity": {
    "action": "Approve",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x512301b6340e502dd26673cbcee1c26e025b4bda\",\"grantor_user_id\":819578939}",
    "nonce": "0xc8e5ba6fb40e33cd038681d129094a32b0dfa5e525dfcb94cd77daca176f452c",
    "signature": "0x7e6faa814b62a8338c69085e28e49084f0a0efedfaaf5eba6306d2217a41b2c96c131e1d1fcf78499fd39e65101d9e6a9a5178fb6229e48d0496fc56a6d2852d1b",
    "signer": "0x512301B6340e502dD26673cbCEe1c26E025b4BDA",
    "userId": "933420813"
  }
}