{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdb1c942149e899174997080a002d1c36e1cc2b2d02bbd8535bce77f260fedc87",
    "signature": "0xbeae51c67b432dd57fec7475ea1451d343740e1a955796814953f6da29ea54cc4410c6d2e04bf9ed637ab9b176fdb040d0f1e2ddf9da1b8e4c3b42173b1ba0231b",
    "signer": "0x99D2cAb0450e06Fc332e20e4dC5C8f67acDE5407",
    "userId": "949730142"
  }
}