{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x80aaad008a83dec84dc8a37cf4c07db3ddd61590f76cd2fd093afb958ccd65e6",
    "signature": "0xfd1211a1c47ecf9989e9d1c1911c5d2886ffa77ab30328d80aa7e26d03b0c1754a6aae4f23e2fd0075edc5acb118bc9d1ca3facdea63c575ed00be5388f0a0041c",
    "signer": "0x5d216c5Be3C3C1bA17bb4A1BaCF9aDc89820b08a",
    "userId": "863929089"
  }
}