{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x92d54c815bcd5703fead1177da520cefd89d2ccae7274988c1f701e33f898ace",
    "signature": "0x2b2dcb8351694b38b8e420a0fb9c05662fc352210ee120892993afd8d8e6ffa147b3620abdc3c734db5f85c772f928073a5e7cfcba9eeff82dad89dc65db5ed41c",
    "signer": "0xE22639FD840080b20889373FEa6060B4757eB9c1",
    "userId": "274627911"
  }
}