{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990991961",
    "entityType": "User",
    "nonce": "0x40bc80b377f62a4051f38e190f3d8499f4efa602e346e6116dd45171f213c2fe",
    "signature": "0x3cbd4d1f69307be1b68bc63634ab9b42c65664c178a0d15b351afaaf5d15b27f712c8cd399ca270c61f38fcfd21e10a5f57f59a98e4d20352f1c0c0819f99b831b",
    "signer": "0x6eaB1F32D4a4155091cCA4B359a66D9BE34f8E10",
    "userId": "794729759"
  }
}