{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x286e7ad8f9447d0112953bdb1684a4b4192ecb76\"}",
    "nonce": "0xe999ffd893c92c1dd1a9387a9c732de20424522a91dd8b6aed25c1550195dbf7",
    "signature": "0xfb4dcad82dc8d24571236f5fc60308bb8e3e02944ac981420ada89bb5af84bc81682d43b20eb8701f47294060d6fba8421683ab70f600d04a1e4fe5aabdc017e1b",
    "signer": "0x539524781b773761694CB6990bDF6CA576c8133A",
    "userId": "105640001"
  }
}