{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b1803ee7a8f625b395e5c7fd52a9d0f37d052560517132c6c30363c43ea40e3",
    "signature": "0xe2c5271a58125d887af4ef5cd6a9bd5ce73be9ae04efd182444506e89a295eab62c0fc0b25e83ad7a5006bb99c795241ab4143ca8e7c673f49d0e0f00c5aed831b",
    "signer": "0xE57DeC29dffe1B1E4DE9948F38CFf7201A41587a",
    "userId": "242790722"
  }
}