{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "19057",
    "entityType": "User",
    "nonce": "0x3eee81d01ff5a6ad8759653f2b3a9e3c8d7cb35db89c4d740ed1d4850eb852d6",
    "signature": "0xed8d3d086236f0ca1ed20bcb37204bafaf47c1d5cf93c0e84e5c3c4d9f0f99ee0aa16200f3ca4946b39e22e5e7b77479d75c04011a4226e605bad8d82dd21cf11c",
    "signer": "0x45C682dAb9Cd8ED5e055aC2F6a860Db5F14c27C9",
    "userId": "611525840"
  }
}