{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "629135238",
    "entityType": "User",
    "nonce": "0x42beaab38a91c59ae7410e83a836b74612015839c94c1616cc06683c9217000b",
    "signature": "0x42f0e77e059ba84261f7a55f127bf01dc7155d6e99a6797a25f22fb10aab57580ec9390f7d1dfe94988d6e4ec8b08e71de211d0a3cc3bee30021aedd055313e11c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}