{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889450527",
    "entityType": "User",
    "nonce": "0x04e606efb80642bc37bc99f0656f6667da6e71e1fafc70a852b59f60fccbd4fe",
    "signature": "0x1003c9990bb3ab46aa24692935da8a785f4ca79aac78153b24581d821cf7e1d90aec9e1e35ddc61c1a9ff04e147ec18c26c349e3f89da919502c18f4ac682f781c",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}