{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "253491",
    "entityType": "User",
    "nonce": "0x31f19973e7e188a5c472c5ad982d5d248090f1d9c61bd3669982970c5cf59379",
    "signature": "0x81c0909de3558af3e985d9cc251bb74dbbcc73184fc13bed827437abf8492aa37efe2fd90979a5af42e242f9b0c2d8d1e59a07107f0b39774bae346c427cff731c",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}