{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x0e099300371e0919420b2cc68c350bf577ee433c14528075f772b3ccce97bab8",
    "signature": "0x853458db739afc0df19b61cc93e820a57c954f2dd08f0e5506526446085605ab1616a0851e2b685e8cd6f8de78bb8822604a3bc19f9afccdb0322cc179147b281c",
    "signer": "0xaF260D56498a2d61b204aBc5CAdCbEc98465d11b",
    "userId": "219894195"
  }
}