{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5dba9006f1bfecdea76343902ef7ba125a09742d92167cf83195575e161e68d3",
    "signature": "0x9774f2aa5fa34e9f6bd4a2833d239e10ee14cbae0ac60cf691d8c1f49a2a6fc164b02cd9aab59f2f9de52e14252d33a2f89ed753b7e0ad419da97f9eb957db581c",
    "signer": "0xcFe1eF2d8538759fbF5161710b35d043b5f0c077",
    "userId": "712556959"
  }
}