{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345890",
    "entityType": "User",
    "nonce": "0x137557a04f58988db5dc93f110b941b84b6799c4203fc50050e609d1ce064cb4",
    "signature": "0xb24ffae9dfb9c6070d7b7fca61a45dd37f5e1924d74ee0e262312514b379305e4d681537cf60547ef764d50234a7a547d9dd43feb203a560498d9f6cc791e0051b",
    "signer": "0xC1896EAF7ae2431A08647A163291b5a8A0cd2a6C",
    "userId": "185209372"
  }
}