{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16247",
    "entityType": "User",
    "nonce": "0xead049278de9cf3a856d8770bffcb4c0f04b7f196f6f58a93826eda113c5b7ff",
    "signature": "0x448d67fb92ad3ba642ac49e13071a0b837f76c2ca5b3faab35a36a4757e2123e3fb3d51a1a51337c512555ade0001a504642e8c1f69f8c6e392547afd78b0b3c1b",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}