{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304014",
    "entityType": "User",
    "nonce": "0x04851662dab14debe11bde1f22cd9ed80f17558bf24d849fad22e114ceae16a0",
    "signature": "0xae9c34e4ceb76ba60460505cbe858b548b335ec9a8fa131ece26d1dd89c79a4a7259198dd747ea62fdadf5534ec6b2b7230922663542002a315166cd920739891b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}