{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x45dc77f4b94e2e6292a30af2c66aa0b359f4531e\"}",
    "nonce": "0x91cf1e00669ebc73698a3bc10969d4a3930d092cc4192dcb6a77595e0d33c057",
    "signature": "0x8f30650da0f3c3a7fa962fef047481716b182077ebf773bf4ff1856ef32b3ff92405203e9aceaa045cfa9269b7cad556e00bbba7171759345e31b127464936491c",
    "signer": "0x6485ba83ff6C16bd22cc71aC3De04398656a0a64",
    "userId": "737491022"
  }
}