{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "141759",
    "entityType": "User",
    "nonce": "0xf703740956a43ccb3a0873da07e94c8af5f47968507be664984b438c4a340848",
    "signature": "0x44efeffb453c0494edf1530c42f8034d63a8b2d58d53ba746719f6bb859414785b18dad21c5c03ddaf0cb766063ea17ed5e8c90bb0ab970a0370db05250529821b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}