{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x5b1bc6b15bfd49d3991ad6e84621e7f0fbf2a77e\"}",
    "nonce": "0xd287468bab5bd594c9d200f045278c9ae37f74e296d4d29efa370fe23d10d7f3",
    "signature": "0x8239c6382d943e75bde3c42934b683d1ce2d58562576ea2064631908562f886c3ad98e696050f0030f8c267f05816653af36ec44301552ca19f6dcd67803f72d1b",
    "signer": "0xc1E4136e885Edf6c6e63a770085c43a38f859556",
    "userId": "579896219"
  }
}