{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7ebed5b4dc8458943014093b8f47fbde5c9da303eff44f4af4b5a4febc9f398c",
    "signature": "0x0e2ad1f03129de0fd99385f624d20af8b862600553917a0c61db47dd173fd16955f1be2411dea4cf70827e972ef6e3acca4080c8ee0243cc5c606290560346811b",
    "signer": "0xA13c2625f70AEA0f3F49e5c463a8D9b0F437F212",
    "userId": "101489795"
  }
}