{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x78b08d016b587c8d2bd191141d5c40ad1c6b74d1e315cb4541b949971975b0ef",
    "signature": "0xaa1cfff6f42b74a36258739d3ab327d1e2fc824834e9fc2ea267e26f60d251056caca80cfc408ba20b1b8457e53e05606e55185fcf1231307d7fc5ca03537bc91c",
    "signer": "0x3AD5738B5A2B705fbAc4A00090AAAed2D4ef58Ca",
    "userId": "683271656"
  }
}