{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x8e6a0c5e8c93775d1f70ac5591514a5e00bac7f5\"}",
    "nonce": "0x3696296b8ce19adcdbe662648f2661cac90e08d31970cfe0cfb21f2693d28b30",
    "signature": "0xabca94bfd7729081ee883ee9514958a6b225d800ae5e2d1fe7b0263d72081dd403c582415ab7b8b01f4e4ea548cfac4ec4870850629804a4ea026ba2066364a11b",
    "signer": "0x5C3e11aE91737136957E056d03bE48858B004440",
    "userId": "600103632"
  }
}