{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x15c6cf8ae9d631d6fcb8905708dc7595d8cbb9f5\"}",
    "nonce": "0x39da91c09547021a5fa0817f9d66bd880d906e1115aa948f58be345385af5cea",
    "signature": "0xdcb0de5f09d92d570009525293430278afda49f208e6b0198ce4af74d0a7e8897cd27601ce9c1a875d7095266c3c905994aecec94c84c874e5163018d149b3921c",
    "signer": "0x8c3aa6cf594458763078BFd2ef8282051A8DBC16",
    "userId": "576672259"
  }
}