{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1490395",
    "entityType": "User",
    "nonce": "0x934098e07aee89b2faf5ad8b54065491d66471fc6fbc82cb9f7f36a2458a4653",
    "signature": "0xa7fd569a8619bc25d78810b016290aab896f3b5e1ba59c76773402f6915d37121db65e65517a97f432b3f8f7835d342f22a1b27a0ec26acf24e72ca07e2a34de1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}