{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1698340",
    "entityType": "User",
    "nonce": "0x5dce90bcf969c43bbed92efc9d7ce1b08f118b9ee42576feaca0b3f0199fe04d",
    "signature": "0x4f95040a9d3d3bbc8e10bab7799b64fd9849e413f681b5a6f7a0062cc404173435bc86d6783dd92b24c7c1ba457bb8e00bba3aef6c150382320c57b34a0b8b551b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}