{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0cafb0ae64108ee5ec538a91f218d812c5f77f84b31bbe6bfdea4d728739c3a6",
    "signature": "0x53909e5cde3c9ff4739ed020ebaa6941728bc1ee174bf12c9ba51f1cacb2401723c9f7945296d0fc91103dd9b6d58a5246e7b70dae2d75c3d94aa5849719ecf41b",
    "signer": "0x89AC7cf1a58e945bb5D52879863FC3953D868fFE",
    "userId": "248113601"
  }
}