{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "286864952",
    "entityType": "User",
    "nonce": "0xbc2510b52f4c1215c9c4bfc1f1468463869f011ca18a418adf9eebfa5869b8ac",
    "signature": "0x657884cd296c1135d106bf9851560848dfb72361ee950cb6fedaef8a9e592908537e295e35e0e7b828c654a76d087562e1e0f59f54477c8a6f10b4505bda10cf1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}