{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x33578f2c007ed45b72b865e6678f54583c0d3819e8278d54d8e25dbf0c5ea821",
    "signature": "0x72945e9c8acdc1283743c54c52f7cc3587f1470ec7a58e331c4702ea2d3385e30a48b3b98b7215bae0a651612c54e110dc8c05f54594b802446a973f8e17ba5c1b",
    "signer": "0x6F1e254c97186cEEbEBCAF03d8fDF2eEa7Af8f39",
    "userId": "704717904"
  }
}