{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x59c0b0ea6c3f9ddf122076bd9a8190ef51b0f80a\"}",
    "nonce": "0x7eb54c5848a063f06c2c59bea38caf7524a25c37ad4858fefc97d226bc24cb5e",
    "signature": "0xe7a658d34cff54423c77f93c3230be60a92f30d15b4acf9ee92cc377e4e2ca643bc094855e1878ba511d498a1f90b20c2157201f2f66100f8d86c287544916cc1c",
    "signer": "0xdd28570BDB91162D2e6F7F45717CFdbC5F6678Da",
    "userId": "919892466"
  }
}