{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xd41af68ef04ef65877a44995c9a9b85a4493edbf\"}",
    "nonce": "0x1f5a7ea8aab7d8cf9da5b6bb9824d2e3c97dfd07c37875ce5c7e5ae68aaf1f01",
    "signature": "0xd53b9e25d2f64e8c3ac1fc892074b1bcd2e7705673f70cb57f2fccde01b85d8251063677cb5c70ffe42d2982119c8a81b7e5bdce9e8056de4e428b3166910ab21c",
    "signer": "0xa4B931BCc70573D15F4Ec14DCBa7be68a6532d36",
    "userId": "504451367"
  }
}