{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "498447372",
    "entityType": "User",
    "nonce": "0x4b776771ac8898617c948b742015c8b7c217fe34351852d3bdcd76d6fb228e1b",
    "signature": "0x698bde73d140ea44b9426fbc7582ccc62a730931df475e22f8fbd0c886a2a23930acac70df2a4984a9b4decd6748d984338fd5f7e056348131a1749228ce7b841c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}