{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "374065034",
    "entityType": "User",
    "nonce": "0x2b8180e9d28d4b655429f37f3dbc456cb4b7f1190faaee8a34b44d8fc6f5a5cd",
    "signature": "0xe0176a822ce86510d02553750a0eaa316f7cc0afc36be3b406e9611e6f75a39243ac7af8540f1c9abba4e4ed53b54219c6f0ecb624ca46f894c1171417ea06b21c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}