{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x12419f736ac30837c1ca010ec4e0d24cc02f497d45e29c67ccdf139786614f33",
    "signature": "0x9acab1481822c7b85e93cbbc005cf7c3accaa2b8a8d652dc482f5d7cee9a76776f4ae830d043863fa4083b4e4f66580e279419e54fa7d1faffa8beff68be93951b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}