{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xce76dabe2f78c16f88902965c5b3df5d5d9065e2e3f623a0bbc9ee4802992bc5",
    "signature": "0xddcae4e2ce46d5952f87bc7804719329f7bd81b1034720372419a62a635870733a2eb45df97b9cb9f9be980b60c6c8f5f8fcbeb936c7b7df7c75be8160d2469f1b",
    "signer": "0x1Da43999Ef7aa4B8F9907eaf0C676D5fb1599AFB",
    "userId": "949770551"
  }
}