{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15731",
    "entityType": "User",
    "nonce": "0xeef5c5d25b28a7b22bc5c40a5d18e09f1fe052f3b1c49ba3cadf6df9c618dd19",
    "signature": "0x2ea084b35cc9e43bb5a4f4ebb8ea42518fe78c673919b1c367a10be34fb642b853b8648b96cac2cd9454db3d988a77e954917cc0b0c7e61fdb844f8f7e04bdcc1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}