{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x7b09f769c409ca2c3c2b8d5e7caa031e330b768b\"}",
    "nonce": "0xe5669fcbfc98f226848d838cd5735fb8123d50a13adade1d410e1a43ed6380b0",
    "signature": "0x55021cef93894c913afa9ab629f48906131acce7b072b905d7dcb4cac35c75fc72c142d4bbc854085c2172cd2f6306947f8bae54ca1622d1c085026bb99d88b11c",
    "signer": "0x7f476CB8aBc4e19853B7c68519209468edCE554d",
    "userId": "907500958"
  }
}