{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74616",
    "entityType": "User",
    "nonce": "0x9f666d4e48a62f49a6adfa208435312e389ac761a5721ecb167ad0d2f24b8384",
    "signature": "0x4eb8155390f6326a74f0bb60f57752e5aa581a2ff5c38d1472cc37f894484c166664aee360859416b6aa4253dccae146bafb7dcbb150e1042cc3841fc05495a11b",
    "signer": "0xE4EF593fb5D21ecF6B00BbBB006Eb9725F5F7a5A",
    "userId": "852971520"
  }
}