{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "90243",
    "entityType": "User",
    "nonce": "0xf4af368bb44cb17ded6d89beb1b127950711923106d8641e1051de3f6d3c6d3d",
    "signature": "0x17f257f17ccfa3df024d5a16026b74ddf1c10c9e0f555683488be50ce5e8ac8f4762a071000df814d4a872535e1794a981ea1aac339e04c89046177614cb2d2d1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}