{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x71110791ec4ab894a61b2db9bd3ecec60e43568341995e261d98772d65e777d1",
    "signature": "0x00ff753bd2a80ad43072dac4765921fa10ad944a10f71d82c7c4b34c55443afa51f3b7c2e2af2a1ed3ce80cd20362db1162b85aa4c1dcf8d0469786c1854a84c1b",
    "signer": "0xa8C7601e0019CF3CA78bb8a037FdDBeF68761B48",
    "userId": "928462194"
  }
}