{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4f1669ff31d53c6794d92e905cc535258f363ee74e0f2f105faed2dc62983b51",
    "signature": "0xd22e5647dfbe74de29c2b3b395fa5be369041f7c187561e3204493b5c2e9c1e20f7f13f6d959a60abc680f1ed6c78623b5a6b94b3586547ec40caa95749aab0a1b",
    "signer": "0xf7Aa544bb3B895424fDD1bF0b8D1922AC9488Fba",
    "userId": "812778388"
  }
}