{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x87fc82fadd92dc20914336c4f45f82fe3b8a60209ee061582af7cd2a53507fd7",
    "signature": "0x049387f52fccebc3b163e44a2e2d19f15c07ac8124bff5117f32fd72eb77617a55ab5041e01899aa7ecfd6196a860f4bb1c859b2a54d9dea51610782b97aa3e21b",
    "signer": "0x002003A2C193cf1E880301Ca10e5295f20f6A48a",
    "userId": "732019006"
  }
}