{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150500",
    "entityType": "User",
    "nonce": "0xaf7023cf5a17b5698f13ce687a6bb0ff0ed30d6fd7b6ffe39eb08e1e296ff3a8",
    "signature": "0x6b31a3fd8fb7cec261c7d4ba31a634342ec4b3dec60d3b3ba730b77930d7cba32c95ff7b029f3554bdbcf45b2509ead24776ae7041efbe19e6df247ba725136c1b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}