{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "281470566",
    "entityType": "User",
    "nonce": "0x3a8521ed055da6c146c65ed51ea8b89223f0818d03fe65560c4ac6647a53a239",
    "signature": "0x5b49b40ce23f6b55909addebaa7afda53c381712958c617e6c039c6283ff459439b0440da8ee71be701120493bc88c3a9b2c08565593e02aa546d0249e7889061c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}