{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x7188614939515ee936b76accb9a1c17d180d66789d45c98929aa9f76939557a6",
    "signature": "0xd8de3755736575e8eba331f327202f995b7d52bf380e4c8aeaf412d618bd230e674b0bcb733b6196b4a642f045c1176145913443dc9b7cd8ea94e5ef2359a63a1b",
    "signer": "0xdA4a90FB60d0D99ED3Eaeb8b2c26bBC1F5A3b981",
    "userId": "481107997"
  }
}