{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123439",
    "entityType": "User",
    "nonce": "0x79a378773fbe9c4c61568eb5f59175c5f790330e0ee27ae69a5ad05e643697d1",
    "signature": "0x944b814c3f24208ac1374206b0c6a933bf73b38d88174a9d43eae2f55e8b50072766c83ee7092edae4520e652c9adb5981b4434ab64a05c94e14b281db196b141b",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}