{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "920623662",
    "entityType": "User",
    "nonce": "0x1be92efb6e37084fea3e71c921e12a4b88b172ebe4c4dde9c3f573f837305154",
    "signature": "0xa50f312e99d5f215b82ae040e619f480ca072ef0f4ba39aac07f6b9861da125523951872f567169e75a8e7aad49032d8beac2b18c8098ddcdb83cfcacbdc07601c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}