{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2469",
    "entityType": "User",
    "nonce": "0x2d9eaaffbc3d55a49b1dbd26be905fb2b40561b0f3a98a01ec2d4eb75d5008ad",
    "signature": "0xb30bd3bff4e2eaaf8ac7ae0467992ba2106b7a64663078a05a4649b81ef1bd4f7d80e0fd47fa55d4ebf8a4767d4f0349622259826ec5696fe343c67ed8918a721c",
    "signer": "0xF2c19977A72e7f63bBbD9063748E52c002b22f6b",
    "userId": "957488166"
  }
}