{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x419425514d452e5a96defe60dfedd638dc747005d5b2f0651c704a5d9bad18e8",
    "signature": "0x86c0fd3041c69078295000f789de17bf0f14690450029ca0c37a3b1280f6dcb35ccbb8e57b496e3537d6d876bfb762b29de75a6451fdce822db7815ace0822391b",
    "signer": "0xe70E5e9911bE8C8219578d87733eBD45BF224Cb3",
    "userId": "374887230"
  }
}