{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xb30d5e0662407d3a32294b74406c14f0e120e45538a61230b5a59f64c7a9fdf2",
    "signature": "0x82837a16b230580d41d130dd1d77a432b0ff8ae1ba02d4610b82828cab319955297d5c04947fe1be57c03fa52e94970f77af308be7b3b06e990b011ccc6068da1c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}