{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308998",
    "entityType": "User",
    "nonce": "0x195ad90307f1c926a670b7fc06e15dd2e2474b20b98ef76dec1024426fc5ebb6",
    "signature": "0xeb8bfec3de479bbe756def24f7895de9ddb94bfb091244dcf62c97dad95eb67f530f84833dc1d715c5ca757d89981171c8ea246a5e8c7e09d11587d0dd9200d71c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}