{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x9c4c10717b1c7837c1db0dee51aeb82ab1fe47f3783d1a8eb3dc53913561662a",
    "signature": "0x59fe0a23683885089ff93c9ff8248a2d7ba28571c2105b98669cc1d756c4a5e862f000945f4415b648327ff095c29ce4a6cb4fa72c34a1f7b39c8bf5c03ea2421c",
    "signer": "0x0AC77876338a1310E24e939DC65C28Ae87A0D298",
    "userId": "415577056"
  }
}