{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3539",
    "entityType": "User",
    "nonce": "0x49bbf7ae67adecb5efcbc6240baffa36e56038375fc19fbeff0b53c339699687",
    "signature": "0x06b7124b7d867d1274af9e2721f29c3f571f6fb0096bd163863474d67d23f786134787b6aa48bb2b88c8e20ad874bb3abbbd1503643b1c9baa294f90743d17211c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}