{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe8e500e17c5acb001d8aa24086965b5b5264fecfb3d2541f0c5369f5bc8863f3",
    "signature": "0x0682e64f8f712e7acc92d938bb59b07ed28682f796588af34a77609c2b18c49609066e7d11d78d0934cf3077245f25cb137e8679f8a028c8272f921c7636b8aa1b",
    "signer": "0xdE77ab6ecdF00f63939F775B1F46d8F0D7A53AB7",
    "userId": "300398894"
  }
}