{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708",
    "entityType": "User",
    "nonce": "0xf9f93704592654374401cdfd6e6a1d65b7c34aaf6d03f7267ff6537e362ebb3e",
    "signature": "0xbad7aca56b6fdc72befc9a584b4111fe73d10ff4a69ebb9af0bb729f8a2f470511cbe72782dc686a7c3c2d21529f915acef31efe6558eeaa09ad01cd96d5fdd81c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}