{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x2cc593fc814461263d282a84286fd4f72c79562e\"}",
    "nonce": "0x0f0c38cb1d125f4838df13878ed55719b00e7961626606577849d45c984eb150",
    "signature": "0xe4d60bd4f8285db53029884e0b35241cffa4519780b476302fcd0146eb4628952a308ec99669204b3b65d18ef38b10df510b5fb9763da2079e8ca4ac5b89201e1b",
    "signer": "0xFFA2265F263175aD8BFc37ab3b28980469457e41",
    "userId": "221430675"
  }
}