{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x76d84d14c9f550b694f2b497238609c60200293cf684236ce28af936f8401e61",
    "signature": "0x258d4859310065e70fc0fa6fe717391fbc67cc4188694ecc7a75eb68be30eb1a7564548c9ba60f047f556e26e5acac3c103e3e6dbc336fe7086c26788c5fffb21c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}