{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2290",
    "entityType": "User",
    "nonce": "0x862c887a13e8acd9a71b2cc3c832eee994b582a6991b9c54badca9f7eeee071c",
    "signature": "0x68e9a18e876e9c17e84520c3f8400ec48e93dd33365cb0ae6d154ff290388720469f9687ca959c1a4eee863345b40f9d274d50a10da61eb89b053650bb1543e41c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}