{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x8e6a0c5e8c93775d1f70ac5591514a5e00bac7f5\"}",
    "nonce": "0x879442ea325a76c8ef6af8eaf593d44d7e27ea4e38db09ad6211699d1fbfbb80",
    "signature": "0xd3248410eac48ed1d2e2a1c16efe4af398f1fb9fb00086fb71b6f7659305428745105af9996a2e204bd07e8f48183998f728e6c2b3a8f09de4d900e1a62a5fd31c",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}