{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x90519f3931c8dc7136a57e8255283a0eaf70bf833b9909e7377bd96daf118957",
    "signature": "0xeb964d161bd68e680ecf9bea65ee586eaccac555cea015cb7c379428751679fe51455d0f7312ea68e5be1642b571463ab3994448d859a0dd512cdc96ed7e02c31b",
    "signer": "0xc7328970a3a0E3454728a9f8D6F14ad16F2AA672",
    "userId": "349615440"
  }
}