{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x857dd9f354de7635e525f7d3da42ae3f46274e6a95216df262e263bf5e8e19f4",
    "signature": "0xf037b5fb0e4334bc3c159864a26ffca22334549ac1f419ff542bdd8194c6ac3161cfe702f12d5842c2a66be83e1f5bef6b93407f37c2ee070ab598f4d9712cee1b",
    "signer": "0xc59Fb8Ee89EF1748eBb97EFbEbbFD2e3728D2f82",
    "userId": "869687895"
  }
}