{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x5a1b3f00d7702845d35fb9f349fb038adabad0ac\"}",
    "nonce": "0x3c07ac354c737040207a8b33c58bb0dcaadf9cc2a021bea0bc72e4bcdf9e3d0c",
    "signature": "0x9dfe4cd5018ef59add97090141a9211a5ff1afda4f9f615992b64ed41fbee6f1254a2c818738f085f1d6909a4819e8104d5bf0197ff354b812f4efa4948fe09a1c",
    "signer": "0x0Dd28790949e0D56720d158842c5BfaC2a4Edcf5",
    "userId": "312594670"
  }
}