{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x303f1bc5ac8bf6f66382e962de18f00743492f8e92c2a4d82881aca28fb5df32",
    "signature": "0x78a2626bd5c8c86e9fbb3aa1ab85d410b9f31e17e4e26cb5e7dcc2e413fe32497c23582ededd8f341ff8c752be59daec934140dbfc93ddfade171b77b4f5ff3c1c",
    "signer": "0x8f0Aa8630bdC846D6a2eB06f6b4b21f508E95D29",
    "userId": "30179440"
  }
}