{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x6c1ef2e9c33e2ba1c0d352e41e06e8a3c7721c6f\"}",
    "nonce": "0xc4f57689b6deb9c9e37c7b1a0918c69213cd9ef46d105321abf4d8e02fd13700",
    "signature": "0xb630f1308c6cef15662a0bb4e1f4d49bea50f0a7eace6134f0c8193339fb14e3131c207027c0d2049c90953364dbe337867673da07800fc6c9a8397c45b889981c",
    "signer": "0x93e171140e1BB2A1CFb7327246d32A15f1eE60B9",
    "userId": "666428783"
  }
}