{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeb263d17903f36431610e701f829d79d91ca504d01d55c9d36272875df7e5b70",
    "signature": "0xe4a6f4aec27496bcf728f251a8eaf3352ec94f20d1dc4c7dc7067766e05ff130478bcd81256d0cf043eae7da53d3f66ea9ebab925987b5df280d57c911f130301c",
    "signer": "0x8fdC9D9Bf249ae15204891D0d6E134A6F5224A14",
    "userId": "55849739"
  }
}