{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101990",
    "entityType": "User",
    "nonce": "0xea79d2cda58c3d20c693300b59dfbe4cd5a56fe154b2c71f53c03d0b2e9fdc54",
    "signature": "0x8cad94fa276aff386fbb0a25ab38d228cd6f3f01ca084f0ccbc0429e4d962c2f287dd564f503fced8684d8fe6d3bcaf33e6a30eedad3dee45630b1ed732c410b1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}