{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18115",
    "entityType": "User",
    "nonce": "0x400f605481e28e239d09ee24f36a32e5725bb026d0e3248e7a2043f5727e19dc",
    "signature": "0x6f9e7603e2d9316e4eae81705d0e710b7b639c53dd18b7006639858a208a91af58ec0bbd43229ca1d63ebe109cafaa24169be91dbb60e3d3540e16cf0b5f37361b",
    "signer": "0xf4932982eB30F083aAeE8850Fe5d411b7A5Df5a5",
    "userId": "746635137"
  }
}