{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x720fa60ef04acf3e59d5e5942a86e94cda8fe06a55060877066f92949a205303",
    "signature": "0xb6ad9a2a00cf0a6f5365097f5dc4cfd85d7f1d25758fc4c50b034546d11c8e50399881fa6c83e036cf0f83c9f0e4dee5f97867ee8deb857eb60e540d89b437bc1b",
    "signer": "0x2c4D6CED340f5543Af16dc7453fb3d3F0162cB40",
    "userId": "253366852"
  }
}