{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xe49bc86348f47c0857de782f1275d8ec881091ac2a3023324d0579c8280aec09",
    "signature": "0x5c6175a6a1a90d4d12f1aa66e5b509a93b0508b4e85d93ee31d30fdcb43d6e967daf51b914f8f0f9e8146525bef3a575c9971ba96cbb2bc7c51a13f6256751821c",
    "signer": "0xf3c59CcC58ba618C8833363781F4765e28cF1b22",
    "userId": "595153814"
  }
}