{
  "manageEntity": {
    "action": "Create",
    "entityType": "Grant",
    "metadata": "{\"grantee_address\":\"0x8cb448a729eca339bc72280c850c5479f5cb0ab5\"}",
    "nonce": "0x737181539cefa3abcb9c007c61b7935ad2cda77731e7bafaca31ced465743d81",
    "signature": "0x1803c0ee089eca8b01ef28e0ac68f32611576ab1058aeda381b4fc43ce549d3a20408dd0ee72558254451124a80a28311debddcfec61add4ea724a079c2955921c",
    "signer": "0x14E5651AA03cf9Daf635147EEE143e7Ff4EfFDd2",
    "userId": "509651367"
  }
}