{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x6687b667182cfdc5646f5aeb14a9945c9b1d3a6b\"}",
    "nonce": "0x10555fbb5823736ac4bf6a7f976b7bdc97d0eeb613e1a186361187bb83a64bbd",
    "signature": "0x91bf022c4560ee42053aed4e71186a1385b2f4db5b7cc80d2533709d0e1ad0852b568d62afb2672b436c56671e40a278faab14c52f848162646911ff7315c6551c",
    "signer": "0x1a14b86421cFD1157bB52D3B0799f0B24a926D3e",
    "userId": "693608897"
  }
}