{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "107573",
    "entityType": "User",
    "nonce": "0x44714411ef884d7e291de33b3eee8c8c8d0d7450d3a018f8d17db0bde918ec82",
    "signature": "0x5e957a28ccc0645485a1291d98292052f4c80f36bdcebab98c7331f43f21a03630dc3a72a4c926c6098551c02cdd64c1d5831865eda59b054d9ca910cc8535601c",
    "signer": "0x9b1a9d02F213F5C768F11FC832194b5cB665E056",
    "userId": "418702748"
  }
}