{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5a6d2fb6bdda67c82a11ed6ef3151cd7f123f7f1eb8926d0b2e4a5fc81b34b8c",
    "signature": "0x639d9580b0f0b56f09df53b16a1b4bb8db358b2d4ea2bb4d7e949a827ef124122eb35a1b52ee848b9d10fb766e82fe121c86ea55e04b0d06c6071fba5f3fc7cf1b",
    "signer": "0xC982f8B52eee7F9710Edeb184eA0a7401A3C79fC",
    "userId": "401235853"
  }
}