{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28834",
    "entityType": "User",
    "nonce": "0xf8804b3a9c0d41f08c4a1203305ba9da6c465d5174a27912820ccd175a36d802",
    "signature": "0x8ed7ef3b6653ec4d285b518841eb91760bb0bdbf5ba334ff8767877e5a84038d1d6316bb0e7b0563f422a4958e0e1653da795def6246e051618c810a7e1156461c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}