{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x28d1a33c6cfd6d1c1ad0bd02f848cbbb4f7b40b8\"}",
    "nonce": "0x34d08d2cad2b9e398b2b42f6a3b525c96f10c1f8e23ba7e636dae6a87aaf1ea1",
    "signature": "0x50a536e95fe883533aef3ed1ece474ac565a5c6738e351f77225357562f8ca906dffa1a9bb78c3b08d68f678f72237de7a64af2b8eeaa6657688fad950b7f4b81c",
    "signer": "0x85c38463b4Fb936eC315485c2360b60B2012Cbe1",
    "userId": "581465865"
  }
}