{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0xa8f89f14287e43c235c684650976c3f4a59e8b06\"}",
    "nonce": "0x240d85f4f99d285044ea032fb1a078275eea3f0b8db788c60243ae9c07a56a3c",
    "signature": "0xd780580fde0ca5469747b48d65fed28ccd1fccc01709b6b888cd6a84016fdcb668dd6592f6df77346a9e5ed1ad0da2a9bf5571b014914006408abcdef05729c11c",
    "signer": "0x0570674e97DE2560cb7c94240BAe25BCAA447a9A",
    "userId": "85928258"
  }
}