{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57dd0ddf9d7bac6f63e7faf80c291ffb21fcab9c6ecc0a4f09c0afc745d674b3",
    "signature": "0x45b4db0636e6e3961dd36bb4419073d28d5074663ab96530c8c46c32312f8bdb06f043a876b36f366a113811cc5778a6643446ac90c27b078ef3303d7e1a3d5f1b",
    "signer": "0x113B2F3906eeb49B7FC6d3c5b9Ba254F87019006",
    "userId": "387348748"
  }
}