{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6542",
    "entityType": "User",
    "nonce": "0xa1d1e3f02b962de028cdefad0117d71496365b3b056efaf46e8ba7ecd63b752a",
    "signature": "0x689a963c749c0863131789182da407c966f047644a12d56736bcf446c43662850f1f74e57c7eead99bc4f1350d6e0e8063c173076409b1a0a3f6636abe7436ab1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}