{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "396557",
    "entityType": "User",
    "nonce": "0xf4cef3bcd4739ddb549d9b815ac8d46bc5e4f1195b54d95a484f598ecb048d09",
    "signature": "0x9f723480013c688c918b196857ae2d14de3d222033a262206e730e899e1878b54d418d669d3b19a8c2230be61518e8253d21cc26087ac37f432287ea462e724b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}