{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x4d557ac17b3f1b7479ba5aef50743d4c2059bd16\"}",
    "nonce": "0x20e0a7c02a7e7246184e50f50eb9f29fc5d67bbe7e3854b14e1ebf90d1394d8e",
    "signature": "0xba206dbc3a7190d8af4a075c31a8adda7e6eb3fd95302bdc3b368ad26bdec1855fcf8ef90a88ef2a8bd226ee46eafae2631dccc635fb3705cc7bc89c32967e011b",
    "signer": "0xB349Da082c4F3CDc0f9a8F821087d68422a78485",
    "userId": "528382037"
  }
}