{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x39bb1e8eac74a8773b8868f8b0cd4e441d0f48513e7d02422f1e45f875a37cf5",
    "signature": "0x234b6afa1c9edcdefc02ae88506ad548f9c08481d5d5d38fe435ef06be74a47f6cd164a0fdcf1ed8c0bf55afd86646424ef826ccafb4aa2c3d1f1c6cf92f79e71b",
    "signer": "0x0c386B8dC8A28F528dfcebD831b0C1efAB4090bE",
    "userId": "767216175"
  }
}