{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xc037ce34cb12a8bce5e545700164b443c1a9000b\"}",
    "nonce": "0xf11b7ec8da8cfc60802231dd78e62f9c3b55395c596f3203ca148c9a07b7aeea",
    "signature": "0x376023950169c11f07af4698e7497ec0995ec86f865d27cb7cc001dffcf7ebe648241f92feb213482763e6060691dfe1259c2bea82cfaf2b620c362f73efc3f81b",
    "signer": "0x169be889E6810b2edB013aE4FAD70A1759C8a348",
    "userId": "1131"
  }
}