{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154589",
    "entityType": "User",
    "nonce": "0x1e85c449e379cb308b501112d03bde4265dbd905ad16f969d9b681b19cbc7c43",
    "signature": "0xbd5052c001cd952208bcd075f25c65994978b2deca4e3109a01ff9f309e424ec26462f6d46d03e68c9f993408d7ed478af6f212abd2944bc405833c520a8d1891b",
    "signer": "0x599AcAE6Bd3db598aFCa7e4fF9Af46c766a941e9",
    "userId": "708112906"
  }
}