{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298654375",
    "entityType": "User",
    "nonce": "0x1bc9f525d4fd06ec379c5b002f2190982791b1c8983fc5ebb26acee93ce1030f",
    "signature": "0x25211d3c50685539c4320f117dd5c6a05471c8b90590d248303786b1a5b3884210d088271fc21620381845f0063efe63144dd843b27d9ab6a600a772ad4e02001c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}