{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "171877",
    "entityType": "User",
    "nonce": "0x87044f4e6a968928baf7a393ad65e7f6f7f0bb792d859c8a6f63a4bc2f4ac64f",
    "signature": "0x2599a0c58730b96400494009c126d695d5d80c5f4445c07ca139c29d6ef5f8056f0104d388f16e7d5a3e5a9ba634a39ccbabdef0ce1903a5c747b64eafeaa4de1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}