{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x8e6a0c5e8c93775d1f70ac5591514a5e00bac7f5\"}",
    "nonce": "0x31f3de50200aecf4dfaf58969b0fde3e93b6b5f35a85a6ef7d5c9f127020c518",
    "signature": "0x9d6a1e389543ae79aec131876c8ee493a8c51b70ed7c34f1bd79fcc04b8bf6ef28f7b910f31aa581e8e2d87d38578bdb96a1bd710119c42a278c7eac7c6e09301c",
    "signer": "0x7f187CB5cf5283a55C75fBc50273EEF6E8Ff32eb",
    "userId": "771561652"
  }
}