{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "666092734",
    "entityType": "User",
    "nonce": "0xb9c7f21b94241c96cba6640980631d8eae4b2aa5045c2dc3eb1e1a524f5a733e",
    "signature": "0xe64b7f625a4b29cc1cb28f20c4a2b75425547bb224e778e967f21c63bb67339614d6cddd71ff14c230f6010f88aed82a1f771ac0a78855f6a7c53ccd19ce100d1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}