{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754276083",
    "entityType": "User",
    "nonce": "0x354ea72a0ee50b7ab08e51dcb7408e28b18d3f1b2c144756cc948241563076f0",
    "signature": "0x49b0339154ae0dfe6aefdb3fd2817a4e6318729e2550f55c31b82eec6040d14249d59a0d16c93ceb23115d080d5862a33124f297b0025c8bbcc2ccd141c2f8121c",
    "signer": "0xE726D55D6940a70995Ce9D8aa1aCE76FC6f4f544",
    "userId": "285113781"
  }
}