{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x5688065e475f48cef6e8bb02ff46f377a1af0cdf\"}",
    "nonce": "0x9500a0f6a7c72bfcdedca108f6e51f1f9c5fb2e13aa5537b2b2a5a2bbefe7576",
    "signature": "0xdfaf108a096f5249bed36fe2dd53bb926631a308013f2e61d33ce59fdfe75c595022eab42c5dafe4fc8ea941d04a0e61c6a9db0f3262bd4d89198d1ef84a90aa1b",
    "signer": "0x5E8fb659612aDdEcc9Bc5929d68B9DC2F53C5947",
    "userId": "216491227"
  }
}