{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x922cb2ae695da9f7dd0e556954c23eeeb8bffe0e\"}",
    "nonce": "0x75abdbb2a4c44e171bc68bdb9317be5472ee3be932f77a0f29f7b06ebf708fc8",
    "signature": "0xdf2a24be7fb92604d2f95ece164976ef847bf2b1fe13722ee6ab5153d7a38cdd1ea46c0254dcfba0bc9eb7e3fbf5684e889af9aababe36d392c6129f53acbfc81b",
    "signer": "0xdC1648dBb598D6Cd8AA46aD0c5bFB177BC0b25b1",
    "userId": "198001005"
  }
}