{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13548db8db0e92843405febba5e36da133c72657e8abecdb25b129a570f78c9c",
    "signature": "0xb44499483b5b52c761f34591d1002224bea2ac62c1839ec47526ae04a4a4fe5337ab212b10632cf56c7a37aaba58e6cee80ca5695b73af7cb2841fbb602eaeb91b",
    "signer": "0x297474d223819165e2855d3209eCB81FaB9784E0",
    "userId": "581296411"
  }
}