{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x3d49d0e11629370c626e41e1408beb753734c021\"}",
    "nonce": "0xe58ff03da27aa40b812a35291a31654be3d1e09d8548a64a787fcde3f385a56b",
    "signature": "0x01a93b7ee55e87962bba8ec29b19d6e9650f662f37c661c0e68aa3581fedd7d017b3e1c8b5692971c8c9488176d645ca66649eb57029870510dc0db6e590850d1c",
    "signer": "0x8391B52914602191D0802155dAc4ade46d55b0F6",
    "userId": "30177"
  }
}