{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "39490",
    "entityType": "User",
    "nonce": "0xe88504b24d6ba52c5fb5bdad2a9b8389617a3b59850d7b1eea7af47827654827",
    "signature": "0xf4cd917c4c828debc230af03fdd7bedca9681b846a7430e3e512aa8b519d366f1a5c555e0dd293f22284f2f1b118289948f56751504ff571b2ed8ebe97c937361b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}