{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2",
    "entityType": "User",
    "nonce": "0x16c98accf7bc71d25bcd9ae940f9ebf24f253dd690911c6aea505675d08dab7b",
    "signature": "0x16b94c898473ae6f7a1310e8a1ce5a3a57d95dd19dccc89b67a74e943751eba421df5ebc23b0a374b12f158752c0aebb1cd77821d980986b095c385d4c1fc3081b",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}