{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x286e7ad8f9447d0112953bdb1684a4b4192ecb76\"}",
    "nonce": "0xfb7d7001d391a6302e1bb0bcd5aa32e5ab2c7565da83adc516cefb97aea25b46",
    "signature": "0x8cd72cafa2877cf73a2f57c1529af980c55363f7393f0c50a471562769971cff4aad37f7695b81db5d466dab748d4942fe481317949878450bbc719de31e6cf31b",
    "signer": "0x18E2ca31379957A2074779fE36C170309a5BEa54",
    "userId": "250569532"
  }
}