{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "380814",
    "entityType": "User",
    "nonce": "0x53d9766d003546782b41ee2239b9a6f579d4ce75ab722aa953b4b1a0216b99e0",
    "signature": "0x55be029237255dfc8a2b60510dbd15a457761a9de831fc410a2b66495d65a7fd68acc3dbf0ee409e9b92e0ca367768113c112a9aed26cdc8f60216d0256e90141b",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}