{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x76129edff0af037616fd04fbd1aeabba094c43f3e26502bbb6fbd74f1ebf8c60",
    "signature": "0x34aae59d3531737bcf34d750d6299038500651093f85120755e740a17d598b1601f283372cce15f81dd7be5b6ca42d5b7a0330d0f6f311e966ccbb32240790471b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}