{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x914db2d0251b5f86936f308f15eda2eeccfc60c86399e11a7ec4d8fb21fe48f5",
    "signature": "0xfb70c27c0cbd581a5a2aca7dbfa8f6ed2b9c9b8e8f55b949fa54d2ba3d4ae4470f68172241bf7f1e20af9608c8f966507221a587347adaf87e39a1803ef66b1c1c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}