{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x286e7ad8f9447d0112953bdb1684a4b4192ecb76\"}",
    "nonce": "0x4ffe3c7f206ca269947578852bb1912d21d4f96e8f83f6fe1c21a66035789f52",
    "signature": "0x23fa99ee20ab0a0310f7443116f1d3a0ef0f86ef4e6f2a7800a4c51f338326440f6b5401500a98ea03cbccf5be5ba915c7c27e9d80f038638e4cc4f851a87e9f1c",
    "signer": "0xEF645db3505402bb23edEfe2C059199A7782Ba9D",
    "userId": "392916852"
  }
}