{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x6c1ef2e9c33e2ba1c0d352e41e06e8a3c7721c6f\"}",
    "nonce": "0xf9e822ec25d757252c276035d1544f968d70e7fea802452a7678a1ea55dae746",
    "signature": "0x69214f2cf3c21b05dd0b2b4d633aa24a3b6b056d602bc05a679c4278b075dbd72bdfb8100dc837e5fc4bedc0c8ee23c6ae10b969bb87ce49543f90bfdcb5dcbe1b",
    "signer": "0x407A5a392D12DA8a51e9989C42a1de2242028829",
    "userId": "136173"
  }
}