{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b57bc24d4a901b58d8b6a32d47f30566c48358f55def3853876e554a4524428",
    "signature": "0xe190ef5c10279b12f0f3b37c1f89492a4220f2642fb924249d716e5cc39592cc095bc4e387447593b77a196a142ab11dd41e0364993a325963378bc5457579ce1b",
    "signer": "0x0C1B5A9Bf06f9aefe484d2535e9585D6b6960C70",
    "userId": "529159730"
  }
}