{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc0bb12eae7d9b03bbfbb55e4d9e0ea86e97377769a8920ce244b2fdc52fe8ef9",
    "signature": "0x7e0cd4453d30bc367964a5b880643575907bc5430b13829a0824eeac9bd6729a23d4f8d0bfae4fde15223202e1838f343d560a7f5283e66826563013dd8d27571b",
    "signer": "0x499c4F2ACAF1db2C5bB1cD2764E83bf0A2C676e1",
    "userId": "56498691"
  }
}