{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "87435",
    "entityType": "User",
    "nonce": "0x21da1d5f307bb6edf15a984e34265dbe370f6c3b1514722af5649beddcebc925",
    "signature": "0x9566bcbd1ae8f9ee997d2637aac7d00ee788d5cb049826086729dc9c87ae11094cc9abbec3bd139d91314aa2886ac36335feefb3fb5eaf54e8ed880c35e373521c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}