{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xfb63d338ff17bf1706d8f49aa614989b37cb281b\"}",
    "nonce": "0x5293939614a69d84b771c6d9f28f3ebf0aa9cced2634058cee1665ec492d440c",
    "signature": "0x7434c0a8af375ee0b7414873391306d26c3f38c1a0dc2b2586cd29109c70136836b952af25eff86af18f161710c03902d2a83c0015f36aab867b3a02c68c39ee1c",
    "signer": "0x89779ED2e8C7CB601802D780161a5D995ACFAfA2",
    "userId": "216304593"
  }
}