{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x1bd857077ad04baee5bbf0933c4e3b5e102f422b\"}",
    "nonce": "0xe073e2dc7d1f4dd794f065f8040641517c70774933bcb21b7f03bed82930fd6f",
    "signature": "0x89658d0a2bbe62b770624e073e3391a3fbc5ec49417f4dac8674fd7bfa7b770836d5f583fe2cc4150b1fa19a8e50bb2da23b31a89bd8a174f696cf8eaafdda621c",
    "signer": "0xD8CA2791654E07cC9A317A555D5a5628126ff0a1",
    "userId": "406813663"
  }
}