{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "296531",
    "entityType": "User",
    "nonce": "0xd0e43aaaf3e99b898f343225021583f43a07a04449586a67a47a2581ae7dc826",
    "signature": "0x697acb6286a8fb1043296a542512856146e22ff98ff1164248eac6a491c664c25124537c40871b6cd1bb73d91208fd04c382007d638716c69af34d04929c002d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}