{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0xb6a21b7e61d47dc58f765009d2d9086ecbaca2a24ceef79265464973e20ea764",
    "signature": "0x3727df5e18a8130ff419e94d748b0d5b1f3855396e4a8e9cf184fb5a2b5296e86745233bce8b4b6acd65248bfdcd56dea5c647bee5eeca60972f277e0e0ed14d1c",
    "signer": "0x0246262E4959323EAC2FBf603C6D24352d57Fc51",
    "userId": "700531000"
  }
}