{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "806873848",
    "entityType": "User",
    "nonce": "0x19c66d0fa2c6d9fbba6856714fb8d41bea7a5196ba25a52e6f5d20fc31a3eee7",
    "signature": "0xc340ee5a49822dfd84b47ea50a8a8497287f402063e1ef67d6cf604034dddfaa2d765813a5ec5fa1e44b5919ec739d14757740b875e721f4ddf947dc015f51051b",
    "signer": "0x28Bbb53f14b48eE811b10fD56903fc4D922C6902",
    "userId": "625201833"
  }
}