{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "270209897",
    "entityType": "User",
    "nonce": "0x1e4dcfb7954de42856e24d2c5e606b9f17749c802cb0fbca677424f86d806841",
    "signature": "0xea31c18538ed77e7dd716a7de662481bce8d8291d1ad7c27cf77c1214c1cb91554c38c3e43098e7f57cfa64767ca808434970afd08ac9b600d5ed607fd42970b1c",
    "signer": "0x1481F49fD2f6524D8CDC0089b13bbd2e6E9106F4",
    "userId": "231243"
  }
}