{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2ad554cec700ed1cf86ef2a4e693eb9ba99172fc8b030814e4deeff275e4f8a6",
    "signature": "0x056640addda5a996099dc7cd358eda3b45fefce81b7a5bf7a015ab11d74c610e275981d4d7828c573e9a72af5e95770497ed7eb9060d8e670992149f414b1ca41c",
    "signer": "0xd8B5EB8911b472b5043A36592DDD6A1D78f91785",
    "userId": "753174050"
  }
}