{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x6775d0ac20138899c09436b453eface054478fa57e16de9815f341ffcc5812f5",
    "signature": "0x803fc4184082637ed5d6d83e5b8b3cb68588016cb072babc6a781c9155ffa57752ddfa6dd127696f685e7fa398c766ccdee43e48e5b0a4cab018fcf3826d88f31b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}