{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13875",
    "entityType": "User",
    "nonce": "0xb8d2d98234f17250683fd4d318443708aef1e6c95e813f2b30911e28dc0ffa41",
    "signature": "0x8458a753de0659ce059beea1f88be80e72b27c4ac4c8d67c6b20e104d71dd11a37e7885cb9988a7316998cdcc52d857430c5bb618a2faa5eae9688b28ba07e361b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}