{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50097",
    "entityType": "User",
    "nonce": "0x3a6990cc23b9d41b96e7ef0af87c17e06c4de74137507af000fdccae63708870",
    "signature": "0xac931bd40e405c636e21b51d0eaa36e877bd974f95805649a3d1c6225d688f724a4f575e3c77c80ed0ed843bb02c0a1305bc1260e31fd0a57bbea02f0e441c5a1c",
    "signer": "0x7c5233DE7A8aD918D090BD36cC8C0e6273814D60",
    "userId": "559710456"
  }
}